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BOSTON MARATHON 2025

Jennifer Dembeck

PA

Bib: 8946 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 13%
Gender (Female)
#0 / 12228
Top 2%
Masters (Masters Women)
#0 / 6759
Top 0.4%
Division (F55-59)
#0 / 994
Top 0.1%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:41/mi
20:47
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:36/mi
41:16
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:37/mi
1:01:50
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:42/mi
1:22:39
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:37/mi
1:27:10
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:40/mi
1:43:19
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
6:43/mi
2:04:11
↑ 181↓ 1480.2%
138 ft elev
20M
6:54/mi
2:13:33
↑ 64↓ 500.2%
148 ft elev
21M
7:21/mi
2:20:54
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
6:40/mi
2:25:53
↑ 17↓ 861.7%
156 ft elev
23M
7:00/mi
2:34:39
↑ 23↓ 630.6%
116 ft elev
24M
6:43/mi
2:41:22
↓ 821.3%
34 ft elev
40K· 24.85 mi
6:56/mi
2:47:18
↓ 200.3%
20 ft elev
25.2M
7:35/mi
2:49:55
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:54/mi
2:56:57
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:27:106:39 /mi⚡ faster
2nd Half
1:29:476:51 /mi+3.0%
Positive split — 3.0% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
20:476:413.11 mi20:47
6:41
-
10K
41:166:383.10 mi20:29
6:36
-0:05
15K
1:01:506:383.11 mi20:34
6:37
+0:01
20K
1:22:396:393.11 mi20:49
6:42
+0:05
Half(13.11 mi)
1:27:106:390.68 mi4:31
6:37
-0:05
25K
1:43:196:392.42 mi16:09
6:40
+0:03
30K
2:04:116:403.11 mi20:52
6:43
+0:03
20M
2:13:336:411.36 mi9:22
6:54
+0:11
21M
2:20:546:431.00 mi7:21
7:21
+0:27
35K
2:25:536:420.75 mi4:59
6:40
-0:41
23M
2:34:396:431.25 mi8:46
7:00
+0:20
24M
2:41:226:431.00 mi6:43
6:43
-0:17
40K
2:47:186:440.85 mi5:56
6:56
+0:13
25.2M
2:49:556:450.35 mi2:37
7:35
+0:39
Finish(26.22 mi)
2:56:576:451.02 mi7:02
6:54
-0:41
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:36 /mi

Average Pace

6:45 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:46:59

94% of race

Time at Steady Pace

9:58

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:45 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi53713693694414263263
10K3.10 mi4845+526307+62307+624438268268
15K3.11 mi4664+181290+17290+174414263263
20K3.11 mi4561+103282+8282+84453288288
Half(13.11 mi)0.68 mi4561285-3285-34677306306
25K2.42 mi4386+175266+19266+193885240240
30K3.11 mi4019+367235+31235+312975167167
20M1.36 mi3958+61233+2233+23508260260
21M1.00 mi3920+38235-2235-23894343343
35K0.75 mi3874+46233+2233+23330277277
23M1.25 mi3839+35241-8241-83790368368
24M1.00 mi3775+64240+1240+13088279279
40K0.85 mi3745+30242-2242-23600395395
25.2M0.35 mi3735+10248-6248-63880514514
Finish(26.22 mi)1.02 mi3732+3254-6254-65124897897

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21story building
+97ft-345ft

Overall

4414

Females

263

F55-59

263

5K→10K

3.1 - 6.2 mi

Top 16%
×5story building
+79ft-138ft

Overall

4438

Females

268

F55-59

268

10K→15K

6.2 - 9.3 mi

Top 16%
×3story building
+67ft-78ft

Overall

4414

Females

263

F55-59

263

15K→20K

9.3 - 12.4 mi

Top 16%
×5story building
+106ft-86ft

Overall

4453

Females

288

F55-59

288

20K→Half

12.4 - 13.1 mi

Top 16%
×2story building
+19ft-37ft

Overall

4677

Females

306

F55-59

306

Half→25K

13.1 - 15.5 mi

Top 14%
×4story building
+66ft-88ft

Overall

3885

Females

240

F55-59

240

25K→30K

15.5 - 18.6 mi

Top 10%
×9story building
+181ft-148ft

Overall

2975

Females

167

F55-59

167

30K→20M

18.6 - 20.0 mi

Top 12%
×5story building
+64ft-50ft

Overall

3508

Females

260

F55-59

260

20M→21M

20.0 - 21.0 mi

Top 14%
×8story building
+106ft-24ft

Overall

3894

Females

343

F55-59

343

21M→35K

21.0 - 21.8 mi

Top 12%
×7story building
+17ft-86ft

Overall

3330

Females

277

F55-59

277

35K→23M

21.8 - 23.0 mi

Top 13%
×5story building
+23ft-63ft

Overall

3790

Females

368

F55-59

368

23M→24M

23.0 - 24.0 mi

Top 11%
×6story building
+12ft-82ft

Overall

3088

Females

279

F55-59

279

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3600

Females

395

F55-59

395

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3880

Females

514

F55-59

514

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

5124

Females

897

F55-59

897

Passing Analysis

Category:
Passed
2068
Passed By
429
Net Change
+1639
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5371
5K → 10K55731+526#5371#4845
10K → 15K22342+181#4845#4664
15K → 20K16764+103#4664#4561
20K → Half17170#4561#4561
Half → 25K19722+175#4561#4386
25K → 30K37710+367#4386#4019
30K → 20M8524+61#4019#3958
20M → 21M7840+38#3958#3920
21M → 35K5711+46#3920#3874
35K → 23M7944+35#3874#3839
23M → 24M8420+64#3839#3775
24M → 40K5727+30#3775#3745
40K → 25.2M2818+10#3745#3735
25.2M → Finish6259+3#3735#3732
TOTALS2068429+1639

Passing Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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