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BOSTON MARATHON 2025

Laura Chapman

Bib: 13212 F GB

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 31%
Gender (Female)
#0 / 12228
Top 14%
Division (F18-39)
#0 / 5469
Top 25%
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
7:29/mi
23:16
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:22/mi
46:10
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:16/mi
1:08:46
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:18/mi
1:31:28
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:15/mi
1:36:25
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:29/mi
1:54:34
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:31/mi
2:17:54
↑ 181↓ 1480.2%
138 ft elev
20M
7:46/mi
2:28:27
↑ 64↓ 500.2%
148 ft elev
21M
8:05/mi
2:36:32
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:24/mi
2:42:04
↑ 17↓ 861.7%
156 ft elev
23M
7:42/mi
2:51:42
↑ 23↓ 630.6%
116 ft elev
24M
7:29/mi
2:59:11
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:37/mi
3:05:42
↓ 200.3%
20 ft elev
25.2M
8:13/mi
3:08:32
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:20/mi
3:16:00
↑ 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
1:36:257:21 /mi⚡ faster
2nd Half
1:39:357:36 /mi+3.3%
Positive split — 3.3% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:1223:167:2923:16
7:29
-
10K
6.21 mi11:21:0646:107:2622:54
7:22
-0:07
15K
9.32 mi11:43:421:08:467:2322:36
7:16
-0:06
20K
12.43 mi12:06:241:31:287:2222:42
7:18
+0:02
Half
13.11 mi12:11:211:36:257:214:57
7:15
-0:03
25K
15.53 mi12:29:301:54:347:2318:09
7:29
+0:14
30K
18.64 mi12:52:502:17:547:2423:20
7:31
+0:02
20M
20.00 mi13:03:232:28:277:2510:33
7:46
+0:15
21M
21.00 mi13:11:282:36:327:278:05
8:05
+0:19
35K
21.75 mi13:17:002:42:047:275:32
7:24
-0:41
23M
23.00 mi13:26:382:51:427:289:38
7:42
+0:18
24M
24.00 mi13:34:072:59:117:287:29
7:29
-0:13
40K
24.85 mi13:40:383:05:427:286:31
7:37
+0:08
25.2M
25.20 mi13:43:283:08:327:292:50
8:13
+0:36
Finish
26.22 mi13:50:563:16:007:297:28
7:20
-0:53

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

7:15 /mi

Average Pace

7:29 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

3:05:05

94% of race

Time at Steady Pace

10:55

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /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 mi10:58:1223:167:2923:16
7:29
#12144
10K
6.21 mi11:21:0646:107:2622:54
7:22
#11512
15K
9.32 mi11:43:421:08:467:2322:36
7:16
#10870
20K
12.43 mi12:06:241:31:287:2222:42
7:18
#10398
Half
13.11 mi12:11:211:36:257:214:57
7:15
#10346
25K
15.53 mi12:29:301:54:347:2318:09
7:29
#10236
30K
18.64 mi12:52:502:17:547:2423:20
7:31
#9690
20M
20.00 mi13:03:232:28:277:2510:33
7:46
#9573
21M
21.00 mi13:11:282:36:327:278:05
8:05
#9442
35K
21.75 mi13:17:002:42:047:275:32
7:24
#9356
23M
23.00 mi13:26:382:51:427:289:38
7:42
#9196
24M
24.00 mi13:34:072:59:117:287:29
7:29
#9084
40K
24.85 mi13:40:383:05:427:286:31
7:37
#8992
25.2M
25.20 mi13:43:283:08:327:292:50
8:13
#8939
Finish
26.22 mi13:50:563:16:007:297:28
7:20
#8863
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi1214428682868978917911791
10K6.21 mi3.10 mi11512+6322556+3122556+3121092822692269
15K9.32 mi3.11 mi10870+6422255+3012255+301978917911791
20K12.43 mi3.11 mi10398+4722053+2022053+202911315771577
Half13.11 mi0.68 mi10346+522037+162037+16966317911791
25K15.53 mi2.42 mi10236+1102018+192018+19985420402040
30K18.64 mi3.11 mi9690+5461820+1981820+198783513281328
20M20.00 mi1.36 mi9573+1171801+191801+19880418851885
21M21.00 mi1.00 mi9442+1311774+271774+27787616731673
35K21.75 mi0.75 mi9356+861757+171757+17793716541654
23M23.00 mi1.25 mi9196+1601723+341723+34788617741774
24M24.00 mi1.00 mi9084+1121707+161707+16760017061706
40K24.85 mi0.85 mi8992+921706+11706+1759417991799
25.2M25.20 mi0.35 mi8939+531707-11707-1722417401740
Finish26.22 mi1.02 mi8863+761711-41711-4798720622062

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9789

Females

1791

F18-39

1791

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10928

Females

2269

F18-39

2269

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9789

Females

1791

F18-39

1791

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

9113

Females

1577

F18-39

1577

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9663

Females

1791

F18-39

1791

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9854

Females

2040

F18-39

2040

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

7835

Females

1328

F18-39

1328

30K→20M

18.6 - 20.0 mi

Top 31%
×5story building
+64ft-50ft

Overall

8804

Females

1885

F18-39

1885

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

7876

Females

1673

F18-39

1673

21M→35K

21.0 - 21.8 mi

Top 28%
×7story building
+17ft-86ft

Overall

7937

Females

1654

F18-39

1654

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7886

Females

1774

F18-39

1774

23M→24M

23.0 - 24.0 mi

Top 27%
×6story building
+12ft-82ft

Overall

7600

Females

1706

F18-39

1706

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7594

Females

1799

F18-39

1799

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7224

Females

1740

F18-39

1740

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7987

Females

2062

F18-39

2062

Passing Analysis

Category:
Athletes Passed
3729*
Passed By
448
Net Change
+3281
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12144
5K → 10K70169+632#12144#11512
10K → 15K65412+642#11512#10870
15K → 20K48917+472#10870#10398
20K → Half597+52#10398#10346
Half → 25K20797+110#10346#10236
25K → 30K564*18+546#10236#9690
30K → 20M15639+117#9690#9573
20M → 21M16231+131#9573#9442
21M → 35K10418+86#9442#9356
35K → 23M18727+160#9356#9196
23M → 24M13624+112#9196#9084
24M → 40K13341+92#9084#8992
40K → 25.2M6714+53#8992#8939
25.2M → Finish11034+76#8939#8863
TOTALS3729*448+3281

* Includes athletes who did not complete a segment (DNF/DNQ).

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing