Boston Marathon logo
BOSTON MARATHON 2025

Erin O'Donnell

Bib: 26804•F

ME

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:44/mi
30:14
↑ 97↓ 3451.5%
10K· 6.21 mi
9:33/mi
59:55
↑ 79↓ 1380.4%
15K· 9.32 mi
9:42/mi
1:30:02
↑ 67↓ 78
20K· 12.43 mi
9:48/mi
2:00:30
↑ 106↓ 860.1%
Half· 13.11 mi
9:40/mi
2:07:06
↑ 19↓ 370.5%
25K· 15.53 mi
10:17/mi
2:32:02
↑ 66↓ 880.2%
30K· 18.64 mi
10:46/mi
3:05:30
↑ 181↓ 1480.2%
20M
11:10/mi
3:20:40
↑ 64↓ 500.2%
21M
11:40/mi
3:32:20
↑ 106↓ 241.6%
35K· 21.75 mi
12:27/mi
3:41:39
↑ 17↓ 861.7%
23M
10:55/mi
3:55:19
↑ 23↓ 630.6%
24M
11:05/mi
4:06:24
↓ 821.3%
40K· 24.85 mi
11:28/mi
4:16:12
↓ 200.3%
25.2M
12:31/mi
4:20:31
↑ 13↓ 160.2%
Finish· 26.22 mi
9:46/mi
4:30:28
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:06
Pace9:42 /mi
2nd Half
Distance13.11 mi
Time2:23:22
Pace10:56 /mi
📊Positive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:3630:149:4430:14
9:44
-
10K
6.21 mi12:16:1759:559:3929:41
9:33
-0:11
15K
9.32 mi12:46:241:30:029:4030:07
9:42
+0:09
20K
12.43 mi13:16:522:00:309:4230:28
9:48
+0:06
Half
13.11 mi13:23:282:07:069:426:36
9:40
-0:08
25K
15.53 mi13:48:242:32:029:4724:56
10:17
+0:37
30K
18.64 mi14:21:523:05:309:5733:28
10:46
+0:29
20M
20.00 mi14:37:023:20:4010:0215:10
11:10
+0:24
21M
21.00 mi14:48:423:32:2010:0711:40
11:40
+0:30
35K
21.75 mi14:58:013:41:3910:129:19
12:27
+0:47
23M
23.00 mi15:11:413:55:1910:1413:40
10:55
-1:32
24M
24.00 mi15:22:464:06:2410:1611:05
11:05
+0:10
40K
24.85 mi15:32:344:16:1210:189:48
11:28
+0:23
25.2M
25.20 mi15:36:534:20:3110:204:19
12:31
+1:03
Finish
26.22 mi15:46:504:30:2810:199:57
9:46
-2:45

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

9:33 /mi

Average Pace

10:19 /mi

Slowest Pace

12:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:03

51% of race

Time at Steady Pace

1:38:19

36% of race

Time at Slower Pace

35:06

13% of race

Average Pace: 10:19 /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 mi11:46:3630:149:4430:14
9:44
#24926
10K
6.21 mi12:16:1759:559:3929:41
9:33
#24583
15K
9.32 mi12:46:241:30:029:4030:07
9:42
#24468
20K
12.43 mi13:16:522:00:309:4230:28
9:48
#24294
Half
13.11 mi13:23:282:07:069:426:36
9:40
#24287
25K
15.53 mi13:48:242:32:029:4724:56
10:17
#24213
30K
18.64 mi14:21:523:05:309:5733:28
10:46
#24109
20M
20.00 mi14:37:023:20:4010:0215:10
11:10
#24085
21M
21.00 mi14:48:423:32:2010:0711:40
11:40
#24028
35K
21.75 mi14:58:013:41:3910:129:19
12:27
#24146
23M
23.00 mi15:11:413:55:1910:1413:40
10:55
#24072
24M
24.00 mi15:22:464:06:2410:1611:05
11:05
#24091
40K
24.85 mi15:32:344:16:1210:189:48
11:28
#24108
25.2M
25.20 mi15:36:534:20:3110:204:19
12:31
#24109
Finish
26.22 mi15:46:504:30:2810:199:57
9:46
#24067
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24926101701017024266(Top 85%)9819(Top 80%)9819(Top 180%)
10K6.21 mi3.10 mi24583+3439993+1779993+17724245(Top 85%)9832(Top 80%)9832(Top 180%)
15K9.32 mi3.11 mi24468+1159942+519942+5124266(Top 85%)9819(Top 80%)9819(Top 180%)
20K12.43 mi3.11 mi24294+1749860+829860+8223784(Top 84%)9594(Top 78%)9594(Top 175%)
Half13.11 mi0.68 mi24287+79858+29858+224058(Top 85%)9741(Top 80%)9741(Top 178%)
25K15.53 mi2.42 mi24213+749827+319827+3123914(Top 84%)9695(Top 79%)9695(Top 177%)
30K18.64 mi3.11 mi24109+1049787+409787+4023553(Top 83%)9633(Top 79%)9633(Top 176%)
20M20.00 mi1.36 mi24085+249802-159802-1523917(Top 84%)9915(Top 81%)9915(Top 181%)
21M21.00 mi1.00 mi24028+579783+199783+1922971(Top 81%)9487(Top 78%)9487(Top 173%)
35K21.75 mi0.75 mi24146-1189849-669849-6626420(Top 93%)11292(Top 92%)11292(Top 206%)
23M23.00 mi1.25 mi24072+749834+159834+1523047(Top 81%)9630(Top 79%)9630(Top 176%)
24M24.00 mi1.00 mi24091-199867-339867-3324167(Top 85%)10204(Top 83%)10204(Top 187%)
40K24.85 mi0.85 mi24108-179887-209887-2024072(Top 85%)10199(Top 83%)10199(Top 186%)
25.2M25.20 mi0.35 mi24109-19894-79894-724268(Top 85%)10296(Top 84%)10296(Top 188%)
Finish26.22 mi1.02 mi24067+429873+219873+2122165(Top 78%)9252(Top 76%)9252(Top 169%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

24266

Females

9819

F18-39

9819

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

24245

Females

9832

F18-39

9832

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

24266

Females

9819

F18-39

9819

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

23784

Females

9594

F18-39

9594

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

24058

Females

9741

F18-39

9741

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23914

Females

9695

F18-39

9695

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

23553

Females

9633

F18-39

9633

30K→20M

18.6 - 20.0 mi

Top 84%
×5story building
+64ft-50ft

Overall

23917

Females

9915

F18-39

9915

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

22971

Females

9487

F18-39

9487

21M→35K

21.0 - 21.8 mi

Top 93%
×7story building
+17ft-86ft

Overall

26420

Females

11292

F18-39

11292

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

23047

Females

9630

F18-39

9630

23M→24M

23.0 - 24.0 mi

Top 85%
×6story building
+12ft-82ft

Overall

24167

Females

10204

F18-39

10204

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24072

Females

10199

F18-39

10199

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24268

Females

10296

F18-39

10296

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

22165

Females

9252

F18-39

9252

Passing Analysis

Category:
Athletes Passed
1670
Passed By
811
Net Change
+859
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24926
5K → 10K41471+343#24926#24583
10K → 15K19984+115#24583#24468
15K → 20K22652+174#24468#24294
20K → Half2619+7#24294#24287
Half → 25K14369+74#24287#24213
25K → 30K209105+104#24213#24109
30K → 20M9167+24#24109#24085
20M → 21M9033+57#24085#24028
21M → 35K8126-118#24028#24146
35K → 23M11137+74#24146#24072
23M → 24M4059-19#24072#24091
24M → 40K3754-17#24091#24108
40K → 25.2M1718-1#24108#24109
25.2M → Finish5917+42#24109#24067
TOTALS1670811+859
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing