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SHAMROCK MARATHON 2025

Brook Sanderson

Forest, VA

Bib: 1925 F 19

0:00
0:00
/ mi
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Overall
#0 / 1949
Top 45%
Gender (Female)
#0 / 791
Top 36%
Division (F15-19)
#0 / 12
Top 33%
Race Day Weather
71°/61°F
overcast clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
7 ft elev
5K· 3.11 mi
8:27/mi
26:15
↑ 26↓ 31
1 ft elev
10K· 6.21 mi
8:41/mi
53:12
↑ 38↓ 170.1%
22 ft elev
15K· 9.32 mi
8:52/mi
1:20:43
↑ 26↓ 440.1%
5 ft elev
20K· 12.43 mi
8:48/mi
1:48:02
↑ 35↓ 22
17 ft elev
Half· 13.10 mi
9:31/mi
1:54:25
↓ 130.2%
11 ft elev
25K· 15.53 mi
9:46/mi
2:18:12
↑ 48↓ 190.2%
38 ft elev
30K· 18.64 mi
9:41/mi
2:48:17
↑ 38↓ 52
25 ft elev
35K· 21.75 mi
13:52/mi
3:31:21
↑ 39↓ 39
25 ft elev
25.2M
11:36/mi
4:11:21
↑ 57↓ 58
24 ft elev
Finish· 26.22 mi
8:45/mi
4:20:16
↑ 17↓ 12
28 ft elev
Course Elevation
-8–55 ft
≈
×5story building
•▲ 331 ft climb · ▼ 310 ft descent

The Course

Half Splits

1st Half· via Half
1:54:258:45 /mi⚡ faster
2nd Half
2:25:5211:08 /mi+27.5%
Positive split — 27.5% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:02:2226:158:2726:15
8:27
-
10K
6.21 mi08:29:1953:128:3426:57
8:41
+0:14
15K
9.32 mi08:56:501:20:438:4027:31
8:52
+0:11
20K
12.43 mi09:24:091:48:028:4227:19
8:48
-0:04
Half
13.10 mi09:30:321:54:258:456:23
9:31
+0:43
25K
15.53 mi09:54:192:18:128:5423:47
9:46
+0:15
30K
18.64 mi10:24:242:48:179:0230:05
9:41
-0:05
35K
21.75 mi11:07:283:31:219:4443:04
13:52
+4:11
25.2M
25.20 mi11:47:284:11:219:5940:00
11:36
-2:16
Finish
26.22 mi11:56:234:20:169:578:55
8:45
-2:51

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

8:27 /mi

Average Pace

9:56 /mi

Slowest Pace

13:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

53:12

20% of race

Time at Steady Pace

2:04:00

48% of race

Time at Slower Pace

1:23:04

32% of race

Average Pace: 9:56 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi08:02:2226:158:2726:15
8:27
#503
10K
6.21 mi08:29:1953:128:3426:57
8:41
#546
15K
9.32 mi08:56:501:20:438:4027:31
8:52
#592
20K
12.43 mi09:24:091:48:028:4227:19
8:48
#619
Half
13.10 mi09:30:321:54:258:456:23
9:31
#618
25K
15.53 mi09:54:192:18:128:5423:47
9:46
#664
30K
18.64 mi10:24:242:48:179:0230:05
9:41
#772
35K
21.75 mi11:07:283:31:219:4443:04
13:52
#866
25.2M
25.20 mi11:47:284:11:219:5940:00
11:36
#903
Finish
26.22 mi11:56:234:20:169:578:55
8:45
#884
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF15-19Seg. OverallSeg. FemalesSeg. F15-19
5K3.11 mi3.11 mi50312726941911
10K6.21 mi3.10 mi546-43140-1326081602
15K9.32 mi3.11 mi592-46152-1226941911
20K12.43 mi3.11 mi619-27165-131+16721771
Half13.10 mi0.67 mi618+1164+116831852
25K15.53 mi2.43 mi664-46174-1018502465
30K18.64 mi3.11 mi772-108219-454-311504056
35K21.75 mi3.11 mi866-94267-48413024947
25.2M25.20 mi3.45 mi903-37291-24410614146
Finish26.22 mi1.02 mi884+19283+845041653

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×1story
+26ft-31ft

Overall

694

Females

191

F15-19

1

5K→10K

3.1 - 6.2 mi

Top 31%
×2story building
+38ft-17ft

Overall

608

Females

160

F15-19

2

10K→15K

6.2 - 9.3 mi

Top 36%
×2story building
+26ft-44ft

Overall

694

Females

191

F15-19

1

15K→20K

9.3 - 12.4 mi

Top 34%
×1story
+35ft-22ft

Overall

672

Females

177

F15-19

1

20K→Half

12.4 - 13.1 mi

Top 35%
×1human
+7ft-13ft

Overall

683

Females

185

F15-19

2

Half→25K

13.1 - 15.5 mi

Top 44%
×2story building
+48ft-19ft

Overall

850

Females

246

F15-19

5

25K→30K

15.5 - 18.6 mi

Top 59%
×2story building
+38ft-52ft

Overall

1150

Females

405

F15-19

6

30K→35K

18.6 - 21.8 mi

Top 67%
×2stacked humans
+39ft-39ft

Overall

1302

Females

494

F15-19

7

35K→25.2M

21.8 - 25.2 mi

Top 54%
×3story building
+57ft-58ft

Overall

1061

Females

414

F15-19

6

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×1human
+17ft-12ft

Overall

504

Females

165

F15-19

3

Passing Analysis

Category:
Athletes Passed
61
Passed By
442
Net Change
-381
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#503
5K → 10K245-43#503#546
10K → 15K147-46#546#592
15K → 20K734-27#592#619
20K → Half87+1#619#618
Half → 25K551-46#618#664
25K → 30K3111-108#664#772
30K → 35K599-94#772#866
35K → 25.2M1148-37#866#903
25.2M → Finish190+19#903#884
TOTALS61442-381

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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BQ

Boston Qualifying analysis available

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