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BOSTON MARATHON 2025

Caroline Nevin

Bib: 17271•F

CT

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 33%
Gender (Female)
#0 / 12228
Top 16%
Division (F18-39)
#0 / 5469
Top 28%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:24
Rank: #9556
Start → 5K
22:24 | 7:13/mi
10K· 6.21 mi
44:30
Rank: #9136 (+420)
5K → 10K
22:06 | 7:07/mi
15K· 9.32 mi
1:06:58
Rank: #9208 (-72)
10K → 15K
22:28 | 7:14/mi
20K· 12.43 mi
1:30:08
Rank: #9438 (-230)
15K → 20K
23:10 | 7:27/mi
Half· 13.11 mi
1:35:11
Rank: #9511 (-73)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:53:18
Rank: #9520 (-9)
Half → 25K
18:07 | 7:28/mi
30K· 18.64 mi
2:17:33
Rank: #9520
25K → 30K
24:15 | 7:48/mi
20M
2:28:19
Rank: #9520
30K → 20M
10:46 | 7:55/mi
21M
2:36:41
Rank: #9494 (+26)
20M → 21M
8:22 | 8:22/mi
35K· 21.75 mi
2:42:25
Rank: #9478 (+16)
21M → 35K
5:44 | 7:40/mi
23M
2:52:24
Rank: #9461 (+17)
35K → 23M
9:59 | 7:58/mi
24M
3:00:03
Rank: #9403 (+58)
23M → 24M
7:39 | 7:39/mi
40K· 24.85 mi
3:06:48
Rank: #9381 (+22)
24M → 40K
6:45 | 7:54/mi
25.2M
3:09:42
Rank: #9333 (+48)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
3:17:25
Rank: #9340 (-7)
25.2M → Finish
7:43 | 7:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:11
Pace7:16 /mi
2nd Half
Distance13.11 mi
Time1:42:14
Pace7:48 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:12:4422:247:1322:24
7:13
-
10K
6.21 mi11:34:5044:307:1022:06
7:07
-0:06
15K
9.32 mi11:57:181:06:587:1122:28
7:14
+0:07
20K
12.43 mi12:20:281:30:087:1523:10
7:27
+0:13
Half
13.11 mi12:25:311:35:117:165:03
7:24
-0:03
25K
15.53 mi12:43:381:53:187:1818:07
7:28
+0:04
30K
18.64 mi13:07:532:17:337:2324:15
7:48
+0:20
20M
20.00 mi13:18:392:28:197:2510:46
7:55
+0:07
21M
21.00 mi13:27:012:36:417:288:22
8:22
+0:27
35K
21.75 mi13:32:452:42:257:285:44
7:40
-0:42
23M
23.00 mi13:42:442:52:247:309:59
7:58
+0:18
24M
24.00 mi13:50:233:00:037:307:39
7:39
-0:19
40K
24.85 mi13:57:083:06:487:316:45
7:54
+0:15
25.2M
25.20 mi14:00:023:09:427:322:54
8:25
+0:31
Finish
26.22 mi14:07:453:17:257:327:43
7:34
-0:51

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

7:07 /mi

Average Pace

7:32 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:39

80% of race

Time at Steady Pace

35:52

18% of race

Time at Slower Pace

2:54

1% of race

Average Pace: 7:32 /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 mi11:12:4422:247:1322:24
7:13
#9556
10K
6.21 mi11:34:5044:307:1022:06
7:07
#9136
15K
9.32 mi11:57:181:06:587:1122:28
7:14
#9208
20K
12.43 mi12:20:281:30:087:1523:10
7:27
#9438
Half
13.11 mi12:25:311:35:117:165:03
7:24
#9511
25K
15.53 mi12:43:381:53:187:1818:07
7:28
#9520
30K
18.64 mi13:07:532:17:337:2324:15
7:48
#9520
20M
20.00 mi13:18:392:28:197:2510:46
7:55
#9520
21M
21.00 mi13:27:012:36:417:288:22
8:22
#9494
35K
21.75 mi13:32:452:42:257:285:44
7:40
#9478
23M
23.00 mi13:42:442:52:247:309:59
7:58
#9461
24M
24.00 mi13:50:233:00:037:307:39
7:39
#9403
40K
24.85 mi13:57:083:06:487:316:45
7:54
#9381
25.2M
25.20 mi14:00:023:09:427:322:54
8:25
#9333
Finish
26.22 mi14:07:453:17:257:327:43
7:34
#9340
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9556161116119403(Top 33%)1605(Top 13%)1605(Top 29%)
10K6.21 mi3.10 mi9136+4201435+1761435+1768801(Top 31%)1307(Top 11%)1307(Top 24%)
15K9.32 mi3.11 mi9208-721484-491484-499403(Top 33%)1605(Top 13%)1605(Top 29%)
20K12.43 mi3.11 mi9438-2301615-1311615-13110398(Top 37%)2149(Top 18%)2149(Top 39%)
Half13.11 mi0.68 mi9511-731652-371652-3710925(Top 38%)2367(Top 19%)2367(Top 43%)
25K15.53 mi2.42 mi9520-91691-391691-399745(Top 34%)1994(Top 16%)1994(Top 36%)
30K18.64 mi3.11 mi95201737-461737-469990(Top 35%)2276(Top 19%)2276(Top 42%)
20M20.00 mi1.36 mi95201782-451782-459938(Top 35%)2399(Top 20%)2399(Top 44%)
21M21.00 mi1.00 mi9494+261801-191801-199660(Top 34%)2447(Top 20%)2447(Top 45%)
35K21.75 mi0.75 mi9478+161802-11802-19810(Top 35%)2502(Top 20%)2502(Top 46%)
23M23.00 mi1.25 mi9461+171836-341836-349860(Top 35%)2664(Top 22%)2664(Top 49%)
24M24.00 mi1.00 mi9403+581852-161852-168799(Top 31%)2225(Top 18%)2225(Top 41%)
40K24.85 mi0.85 mi9381+221878-261878-269443(Top 33%)2644(Top 22%)2644(Top 48%)
25.2M25.20 mi0.35 mi9333+48187818788310(Top 29%)2190(Top 18%)2190(Top 40%)
Finish26.22 mi1.02 mi9340-71917-391917-399755(Top 34%)2873(Top 23%)2873(Top 53%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

9403

Females

1605

F18-39

1605

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8801

Females

1307

F18-39

1307

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

9403

Females

1605

F18-39

1605

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

10398

Females

2149

F18-39

2149

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10925

Females

2367

F18-39

2367

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9745

Females

1994

F18-39

1994

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9990

Females

2276

F18-39

2276

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9938

Females

2399

F18-39

2399

20M→21M

20.0 - 21.0 mi

Top 34%
×8stories
+106ft-24ft

Overall

9660

Females

2447

F18-39

2447

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9810

Females

2502

F18-39

2502

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9860

Females

2664

F18-39

2664

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8799

Females

2225

F18-39

2225

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9443

Females

2644

F18-39

2644

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

8310

Females

2190

F18-39

2190

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

9755

Females

2873

F18-39

2873

Passing Analysis

Category:
Athletes Passed
1849
Passed By
1633
Net Change
+216
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9556
5K → 10K49575+420#9556#9136
10K → 15K134206-72#9136#9208
15K → 20K114344-230#9208#9438
20K → Half1386-73#9438#9511
Half → 25K155164-9#9511#9520
25K → 30K2262260#9520#9520
30K → 20M1131130#9520#9520
20M → 21M9973+26#9520#9494
21M → 35K6044+16#9494#9478
35K → 23M118101+17#9478#9461
23M → 24M10951+58#9461#9403
24M → 40K8058+22#9403#9381
40K → 25.2M6618+48#9381#9333
25.2M → Finish6774-7#9333#9340
TOTALS18491633+216
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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