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SHAMROCK MARATHON 2025

Brook Sanderson

Bib: 1925•F•Age: 19

Forest, VA

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

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

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.10 mi
Time1:54:25
Pace8:45 /mi
2nd Half
Distance13.12 mi
Time2:25:52
Pace11:08 /mi
📊Positive Split: 27.5% slower second half

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

Loading chart...
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.

Loading...
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 mi5031272694(Top 36%)191(Top 24%)1(Top 8%)
10K6.21 mi3.10 mi546-43140-132608(Top 31%)160(Top 20%)2(Top 17%)
15K9.32 mi3.11 mi592-46152-122694(Top 36%)191(Top 24%)1(Top 8%)
20K12.43 mi3.11 mi619-27165-131+1672(Top 34%)177(Top 22%)1(Top 8%)
Half13.10 mi0.67 mi618+1164+11683(Top 35%)185(Top 23%)2(Top 17%)
25K15.53 mi2.43 mi664-46174-101850(Top 44%)246(Top 31%)5(Top 42%)
30K18.64 mi3.11 mi772-108219-454-31150(Top 59%)405(Top 51%)6(Top 50%)
35K21.75 mi3.11 mi866-94267-4841302(Top 67%)494(Top 62%)7(Top 58%)
25.2M25.20 mi3.45 mi903-37291-2441061(Top 54%)414(Top 52%)6(Top 50%)
Finish26.22 mi1.02 mi884+19283+84504(Top 26%)165(Top 21%)3(Top 25%)

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 Visuals

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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Official Timing Data

J & A Racing

J & A Racing

Big River Race Management

Big River Race Management