Boston Marathon logo
BOSTON MARATHON 2025

Molly O'Reilly

Bib: 30041•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 48%
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
8:44/mi
27:08
↑ 97↓ 3451.5%
10K· 6.21 mi
8:35/mi
53:49
↑ 79↓ 1380.4%
15K· 9.32 mi
8:36/mi
1:20:32
↑ 67↓ 78
20K· 12.43 mi
8:33/mi
1:47:07
↑ 106↓ 860.1%
Half· 13.11 mi
8:37/mi
1:53:00
↑ 19↓ 370.5%
25K· 15.53 mi
8:33/mi
2:13:45
↑ 66↓ 880.2%
30K· 18.64 mi
8:48/mi
2:41:06
↑ 181↓ 1480.2%
20M
8:45/mi
2:53:00
↑ 64↓ 500.2%
21M
8:46/mi
3:01:46
↑ 106↓ 241.6%
35K· 21.75 mi
8:12/mi
3:07:54
↑ 17↓ 861.7%
23M
8:15/mi
3:18:14
↑ 23↓ 630.6%
24M
7:57/mi
3:26:11
↓ 821.3%
40K· 24.85 mi
7:58/mi
3:33:00
↓ 200.3%
25.2M
8:19/mi
3:35:52
↑ 13↓ 160.2%
Finish· 26.22 mi
7:24/mi
3:43:24
↑ 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 Half
Distance13.11 mi
Time1:53:00
Pace8:37 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:50:24
Pace8:25 /mi
📊Negative Split: 2.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:2427:088:4427:08
8:44
-
10K
6.21 mi12:14:0553:498:4026:41
8:35
-0:09
15K
9.32 mi12:40:481:20:328:3826:43
8:36
+0:01
20K
12.43 mi13:07:231:47:078:3726:35
8:33
-0:03
Half
13.11 mi13:13:161:53:008:375:53
8:37
+0:04
25K
15.53 mi13:34:012:13:458:3720:45
8:33
-0:04
30K
18.64 mi14:01:222:41:068:3927:21
8:48
+0:15
20M
20.00 mi14:13:162:53:008:3911:54
8:45
-0:03
21M
21.00 mi14:22:023:01:468:398:46
8:46
+0:01
35K
21.75 mi14:28:103:07:548:386:08
8:12
-0:34
23M
23.00 mi14:38:303:18:148:3710:20
8:15
+0:03
24M
24.00 mi14:46:273:26:118:357:57
7:57
-0:18
40K
24.85 mi14:53:163:33:008:346:49
7:58
+0:01
25.2M
25.20 mi14:56:083:35:528:342:52
8:19
+0:21
Finish
26.22 mi15:03:403:43:248:327:32
7:24
-0:55

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

7:24 /mi

Average Pace

8:32 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

22:18

10% of race

Time at Steady Pace

2:05:57

56% of race

Time at Slower Pace

1:15:09

34% of race

Average Pace: 8:31 /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 mi11:47:2427:088:4427:08
8:44
#21162
10K
6.21 mi12:14:0553:498:4026:41
8:35
#20707
15K
9.32 mi12:40:481:20:328:3826:43
8:36
#20418
20K
12.43 mi13:07:231:47:078:3726:35
8:33
#19972
Half
13.11 mi13:13:161:53:008:375:53
8:37
#19968
25K
15.53 mi13:34:012:13:458:3720:45
8:33
#19572
30K
18.64 mi14:01:222:41:068:3927:21
8:48
#18993
20M
20.00 mi14:13:162:53:008:3911:54
8:45
#18721
21M
21.00 mi14:22:023:01:468:398:46
8:46
#18334
35K
21.75 mi14:28:103:07:548:386:08
8:12
#18172
23M
23.00 mi14:38:303:18:148:3710:20
8:15
#17774
24M
24.00 mi14:46:273:26:118:357:57
7:57
#17483
40K
24.85 mi14:53:163:33:008:346:49
7:58
#17208
25.2M
25.20 mi14:56:083:35:528:342:52
8:19
#17059
Finish
26.22 mi15:03:403:43:248:327:32
7:24
#16716
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi211628167816719922(Top 70%)7398(Top 61%)7398(Top 135%)
10K6.21 mi3.10 mi20707+4557891+2767891+27620298(Top 71%)7631(Top 62%)7631(Top 140%)
15K9.32 mi3.11 mi20418+2897710+1817710+18119922(Top 70%)7398(Top 61%)7398(Top 135%)
20K12.43 mi3.11 mi19972+4467456+2547456+25418579(Top 65%)6667(Top 55%)6667(Top 122%)
Half13.11 mi0.68 mi19968+47459-37459-319932(Top 70%)7420(Top 61%)7420(Top 136%)
25K15.53 mi2.42 mi19572+3967236+2237236+22317533(Top 62%)6151(Top 50%)6151(Top 112%)
30K18.64 mi3.11 mi18993+5796946+2906946+29016630(Top 59%)5822(Top 48%)5822(Top 106%)
20M20.00 mi1.36 mi18721+2726814+1326814+13215443(Top 54%)5293(Top 43%)5293(Top 97%)
21M21.00 mi1.00 mi18334+3876625+1896625+18912142(Top 43%)3687(Top 30%)3687(Top 67%)
35K21.75 mi0.75 mi18172+1626554+716554+7113688(Top 48%)4535(Top 37%)4535(Top 83%)
23M23.00 mi1.25 mi17774+3986373+1816373+18111775(Top 41%)3635(Top 30%)3635(Top 66%)
24M24.00 mi1.00 mi17483+2916237+1366237+13610954(Top 39%)3296(Top 27%)3296(Top 60%)
40K24.85 mi0.85 mi17208+2756109+1286109+12810064(Top 35%)2976(Top 24%)2976(Top 54%)
25.2M25.20 mi0.35 mi17059+1496040+696040+697837(Top 28%)2026(Top 17%)2026(Top 37%)
Finish26.22 mi1.02 mi16716+3435861+1795861+1798485(Top 30%)2296(Top 19%)2296(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

19922

Females

7398

F18-39

7398

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

20298

Females

7631

F18-39

7631

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

19922

Females

7398

F18-39

7398

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

18579

Females

6667

F18-39

6667

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

19932

Females

7420

F18-39

7420

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

17533

Females

6151

F18-39

6151

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

16630

Females

5822

F18-39

5822

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15443

Females

5293

F18-39

5293

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12142

Females

3687

F18-39

3687

21M→35K

21.0 - 21.8 mi

Top 48%
×7story building
+17ft-86ft

Overall

13688

Females

4535

F18-39

4535

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

11775

Females

3635

F18-39

3635

23M→24M

23.0 - 24.0 mi

Top 39%
×6story building
+12ft-82ft

Overall

10954

Females

3296

F18-39

3296

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

10064

Females

2976

F18-39

2976

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7837

Females

2026

F18-39

2026

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8485

Females

2296

F18-39

2296

Passing Analysis

Category:
Athletes Passed
4754
Passed By
308
Net Change
+4446
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21162
5K → 10K581126+455#21162#20707
10K → 15K36778+289#20707#20418
15K → 20K47226+446#20418#19972
20K → Half3329+4#19972#19968
Half → 25K40610+396#19968#19572
25K → 30K59920+579#19572#18993
30K → 20M28311+272#18993#18721
20M → 21M3870+387#18721#18334
21M → 35K1664+162#18334#18172
35K → 23M3980+398#18172#17774
23M → 24M2921+291#17774#17483
24M → 40K2750+275#17483#17208
40K → 25.2M1512+149#17208#17059
25.2M → Finish3441+343#17059#16716
TOTALS4754308+4446
📊

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