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BOSTON MARATHON 2025

Jamie O'Brien

Bib: 10704•F

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 28%
Gender (Female)
#0 / 12228
Top 11%
Masters (Masters Women)
#0 / 6759
Top 4%
Division (F45-49)
#0 / 1813
Top 4%
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
7:12/mi
22:23
↑ 97↓ 3451.5%
10K· 6.21 mi
7:14/mi
44:50
↑ 79↓ 1380.4%
15K· 9.32 mi
7:12/mi
1:07:13
↑ 67↓ 78
20K· 12.43 mi
7:15/mi
1:29:46
↑ 106↓ 860.1%
Half· 13.11 mi
7:05/mi
1:34:36
↑ 19↓ 370.5%
25K· 15.53 mi
7:15/mi
1:52:11
↑ 66↓ 880.2%
30K· 18.64 mi
7:41/mi
2:16:04
↑ 181↓ 1480.2%
20M
7:50/mi
2:26:43
↑ 64↓ 500.2%
21M
8:18/mi
2:35:01
↑ 106↓ 241.6%
35K· 21.75 mi
7:12/mi
2:40:24
↑ 17↓ 861.7%
23M
7:31/mi
2:49:49
↑ 23↓ 630.6%
24M
7:19/mi
2:57:08
↓ 821.3%
40K· 24.85 mi
7:20/mi
3:03:24
↓ 200.3%
25.2M
8:16/mi
3:06:15
↑ 13↓ 160.2%
Finish· 26.22 mi
7:05/mi
3:13:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:36
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:38:52
Pace7:33 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:3222:237:1222:23
7:12
-
10K
6.21 mi11:12:5944:507:1322:27
7:14
+0:02
15K
9.32 mi11:35:221:07:137:1322:23
7:12
-0:02
20K
12.43 mi11:57:551:29:467:1322:33
7:15
+0:03
Half
13.11 mi12:02:451:34:367:134:50
7:05
-0:10
25K
15.53 mi12:20:201:52:117:1317:35
7:15
+0:10
30K
18.64 mi12:44:132:16:047:1823:53
7:41
+0:26
20M
20.00 mi12:54:522:26:437:2010:39
7:50
+0:09
21M
21.00 mi13:03:102:35:017:238:18
8:18
+0:28
35K
21.75 mi13:08:332:40:247:235:23
7:12
-1:06
23M
23.00 mi13:17:582:49:497:239:25
7:31
+0:19
24M
24.00 mi13:25:172:57:087:237:19
7:19
-0:12
40K
24.85 mi13:31:333:03:247:236:16
7:20
+0:01
25.2M
25.20 mi13:34:243:06:157:232:51
8:16
+0:56
Finish
26.22 mi13:41:373:13:287:237:13
7:05
-1:11

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

7:05 /mi

Average Pace

7:23 /mi

Slowest Pace

8:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:40

89% of race

Time at Steady Pace

21:48

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:23 /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 mi10:50:3222:237:1222:23
7:12
#9506
10K
6.21 mi11:12:5944:507:1322:27
7:14
#9588
15K
9.32 mi11:35:221:07:137:1322:23
7:12
#9419
20K
12.43 mi11:57:551:29:467:1322:33
7:15
#9192
Half
13.11 mi12:02:451:34:367:134:50
7:05
#9140
25K
15.53 mi12:20:201:52:117:1317:35
7:15
#8876
30K
18.64 mi12:44:132:16:047:1823:53
7:41
#8831
20M
20.00 mi12:54:522:26:437:2010:39
7:50
#8833
21M
21.00 mi13:03:102:35:017:238:18
8:18
#8811
35K
21.75 mi13:08:332:40:247:235:23
7:12
#8704
23M
23.00 mi13:17:582:49:497:239:25
7:31
#8475
24M
24.00 mi13:25:172:57:087:237:19
7:19
#8332
40K
24.85 mi13:31:333:03:247:236:16
7:20
#8200
25.2M
25.20 mi13:34:243:06:157:232:51
8:16
#8175
Finish
26.22 mi13:41:373:13:287:237:13
7:05
#8056
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi9506158715879184(Top 32%)1504(Top 12%)1504(Top 83%)
10K6.21 mi3.10 mi9588-821606-191606-199714(Top 34%)1688(Top 14%)1688(Top 93%)
15K9.32 mi3.11 mi9419+1691566+401566+409184(Top 32%)1504(Top 12%)1504(Top 83%)
20K12.43 mi3.11 mi9192+2271500+661500+668700(Top 31%)1397(Top 11%)1397(Top 77%)
Half13.11 mi0.68 mi9140+521477+231477+238248(Top 29%)1186(Top 10%)1186(Top 65%)
25K15.53 mi2.42 mi8876+2641393+841393+848026(Top 28%)1230(Top 10%)1230(Top 68%)
30K18.64 mi3.11 mi8831+451436-431436-439111(Top 32%)1888(Top 15%)1888(Top 104%)
20M20.00 mi1.36 mi8833-21470-341470-349287(Top 33%)2105(Top 17%)2105(Top 116%)
21M21.00 mi1.00 mi8811+221493-231493-239230(Top 32%)2254(Top 18%)2254(Top 124%)
35K21.75 mi0.75 mi8704+1071471+221471+226621(Top 23%)1145(Top 9%)1145(Top 63%)
23M23.00 mi1.25 mi8475+2291425+461425+466761(Top 24%)1295(Top 11%)1295(Top 71%)
24M24.00 mi1.00 mi8332+1431396+291396+296538(Top 23%)1272(Top 10%)1272(Top 70%)
40K24.85 mi0.85 mi8200+1321381+151381+155850(Top 21%)1082(Top 9%)1082(Top 60%)
25.2M25.20 mi0.35 mi8175+251382-11382-17498(Top 26%)1838(Top 15%)1838(Top 101%)
Finish26.22 mi1.02 mi8056+1191377+51377+56286(Top 22%)1352(Top 11%)1352(Top 75%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

9184

Females

1504

F45-49

1504

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9714

Females

1688

F45-49

1688

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

9184

Females

1504

F45-49

1504

15K→20K

9.3 - 12.4 mi

Top 31%
×5story building
+106ft-86ft

Overall

8700

Females

1397

F45-49

1397

20K→Half

12.4 - 13.1 mi

Top 29%
×2story building
+19ft-37ft

Overall

8248

Females

1186

F45-49

1186

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

8026

Females

1230

F45-49

1230

25K→30K

15.5 - 18.6 mi

Top 32%
×9story building
+181ft-148ft

Overall

9111

Females

1888

F45-49

1888

30K→20M

18.6 - 20.0 mi

Top 33%
×5story building
+64ft-50ft

Overall

9287

Females

2105

F45-49

2105

20M→21M

20.0 - 21.0 mi

Top 32%
×8story building
+106ft-24ft

Overall

9230

Females

2254

F45-49

2254

21M→35K

21.0 - 21.8 mi

Top 23%
×7story building
+17ft-86ft

Overall

6621

Females

1145

F45-49

1145

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6761

Females

1295

F45-49

1295

23M→24M

23.0 - 24.0 mi

Top 23%
×6story building
+12ft-82ft

Overall

6538

Females

1272

F45-49

1272

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5850

Females

1082

F45-49

1082

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7498

Females

1838

F45-49

1838

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

6286

Females

1352

F45-49

1352

Passing Analysis

Category:
Athletes Passed
2386
Passed By
935
Net Change
+1450
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9506
5K → 10K198279-82#9506#9588
10K → 15K24879+169#9588#9419
15K → 20K29568+227#9419#9192
20K → Half6210+52#9192#9140
Half → 25K29733+264#9140#8876
25K → 30K237192+45#8876#8831
30K → 20M99101-2#8831#8833
20M → 21M10987+22#8833#8811
21M → 35K1147+107#8811#8704
35K → 23M24314+229#8704#8475
23M → 24M15815+143#8475#8332
24M → 40K14210+132#8332#8200
40K → 25.2M3712+25#8200#8175
25.2M → Finish14728+119#8175#8056
TOTALS2386935+1450
📊

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing