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BOSTON MARATHON 2025

Jessica O'Connor

Bib: 19406•F

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 43%
Masters (Masters Women)
#0 / 6759
Top 30%
Division (F50-54)
#0 / 1303
Top 22%
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
8:24/mi
26:07
↑ 97↓ 3451.5%
10K· 6.21 mi
8:24/mi
52:12
↑ 79↓ 1380.4%
15K· 9.32 mi
8:21/mi
1:18:07
↑ 67↓ 78
20K· 12.43 mi
8:21/mi
1:44:02
↑ 106↓ 860.1%
Half· 13.11 mi
8:17/mi
1:49:41
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:09:46
↑ 66↓ 880.2%
30K· 18.64 mi
8:26/mi
2:35:58
↑ 181↓ 1480.2%
20M
8:24/mi
2:47:23
↑ 64↓ 500.2%
21M
8:44/mi
2:56:07
↑ 106↓ 241.6%
35K· 21.75 mi
8:09/mi
3:02:13
↑ 17↓ 861.7%
23M
8:23/mi
3:12:43
↑ 23↓ 630.6%
24M
8:12/mi
3:20:55
↓ 821.3%
40K· 24.85 mi
8:19/mi
3:28:02
↓ 200.3%
25.2M
8:59/mi
3:31:08
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:39:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:49:41
Pace8:22 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:49:39
Pace8:22 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:1626:078:2426:07
8:24
-
10K
6.21 mi11:44:2152:128:2426:05
8:24
0:00
15K
9.32 mi12:10:161:18:078:2325:55
8:21
-0:03
20K
12.43 mi12:36:111:44:028:2225:55
8:21
0:00
Half
13.11 mi12:41:501:49:418:225:39
8:17
-0:04
25K
15.53 mi13:01:552:09:468:2120:05
8:17
0:00
30K
18.64 mi13:28:072:35:588:2226:12
8:26
+0:09
20M
20.00 mi13:39:322:47:238:2211:25
8:24
-0:02
21M
21.00 mi13:48:162:56:078:238:44
8:44
+0:20
35K
21.75 mi13:54:223:02:138:236:06
8:09
-0:35
23M
23.00 mi14:04:523:12:438:2310:30
8:23
+0:14
24M
24.00 mi14:13:043:20:558:228:12
8:12
-0:11
40K
24.85 mi14:20:113:28:028:227:07
8:19
+0:07
25.2M
25.20 mi14:23:173:31:088:233:06
8:59
+0:40
Finish
26.22 mi14:31:293:39:208:228:12
8:03
-0:56

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

8:03 /mi

Average Pace

8:22 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:36:14

99% of race

Time at Steady Pace

3:06

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:22 /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 mi11:18:1626:078:2426:07
8:24
#19331
10K
6.21 mi11:44:2152:128:2426:05
8:24
#19234
15K
9.32 mi12:10:161:18:078:2325:55
8:21
#18913
20K
12.43 mi12:36:111:44:028:2225:55
8:21
#18457
Half
13.11 mi12:41:501:49:418:225:39
8:17
#18417
25K
15.53 mi13:01:552:09:468:2120:05
8:17
#17946
30K
18.64 mi13:28:072:35:588:2226:12
8:26
#17248
20M
20.00 mi13:39:322:47:238:2211:25
8:24
#16944
21M
21.00 mi13:48:162:56:078:238:44
8:44
#16618
35K
21.75 mi13:54:223:02:138:236:06
8:09
#16474
23M
23.00 mi14:04:523:12:438:2310:30
8:23
#16195
24M
24.00 mi14:13:043:20:558:228:12
8:12
#16035
40K
24.85 mi14:20:113:28:028:227:07
8:19
#15872
25.2M
25.20 mi14:23:173:31:088:233:06
8:59
#15798
Finish
26.22 mi14:31:293:39:208:228:12
8:03
#15710
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi193317103710318314(Top 64%)6504(Top 53%)6504(Top 499%)
10K6.21 mi3.10 mi19234+977030+737030+7319140(Top 67%)6971(Top 57%)6971(Top 535%)
15K9.32 mi3.11 mi18913+3216861+1696861+16918314(Top 64%)6504(Top 53%)6504(Top 499%)
20K12.43 mi3.11 mi18457+4566599+2626599+26217157(Top 60%)5863(Top 48%)5863(Top 450%)
Half13.11 mi0.68 mi18417+406574+256574+2517751(Top 62%)6201(Top 51%)6201(Top 476%)
25K15.53 mi2.42 mi17946+4716327+2476327+24715790(Top 56%)5193(Top 42%)5193(Top 399%)
30K18.64 mi3.11 mi17248+6985960+3675960+36714332(Top 50%)4553(Top 37%)4553(Top 349%)
20M20.00 mi1.36 mi16944+3045805+1555805+15513122(Top 46%)4056(Top 33%)4056(Top 311%)
21M21.00 mi1.00 mi16618+3265649+1565649+15611837(Top 42%)3522(Top 29%)3522(Top 270%)
35K21.75 mi0.75 mi16474+1445588+615588+6113230(Top 47%)4308(Top 35%)4308(Top 331%)
23M23.00 mi1.25 mi16195+2795462+1265462+12612552(Top 44%)4036(Top 33%)4036(Top 310%)
24M24.00 mi1.00 mi16035+1605400+625400+6212518(Top 44%)4072(Top 33%)4072(Top 313%)
40K24.85 mi0.85 mi15872+1635328+725328+7212241(Top 43%)4061(Top 33%)4061(Top 312%)
25.2M25.20 mi0.35 mi15798+745302+265302+2611603(Top 41%)3834(Top 31%)3834(Top 294%)
Finish26.22 mi1.02 mi15710+885277+255277+2513153(Top 46%)4541(Top 37%)4541(Top 349%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18314

Females

6504

F50-54

6504

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

19140

Females

6971

F50-54

6971

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18314

Females

6504

F50-54

6504

15K→20K

9.3 - 12.4 mi

Top 60%
×5story building
+106ft-86ft

Overall

17157

Females

5863

F50-54

5863

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17751

Females

6201

F50-54

6201

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15790

Females

5193

F50-54

5193

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

14332

Females

4553

F50-54

4553

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

13122

Females

4056

F50-54

4056

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11837

Females

3522

F50-54

3522

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

13230

Females

4308

F50-54

4308

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

12552

Females

4036

F50-54

4036

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

12518

Females

4072

F50-54

4072

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12241

Females

4061

F50-54

4061

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11603

Females

3834

F50-54

3834

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

13153

Females

4541

F50-54

4541

Passing Analysis

Category:
Athletes Passed
4016
Passed By
395
Net Change
+3621
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19331
5K → 10K311214+97#19331#19234
10K → 15K38665+321#19234#18913
15K → 20K48529+456#18913#18457
20K → Half5515+40#18457#18417
Half → 25K48110+471#18417#17946
25K → 30K7079+698#17946#17248
30K → 20M3073+304#17248#16944
20M → 21M3282+326#16944#16618
21M → 35K1473+144#16618#16474
35K → 23M2878+279#16474#16195
23M → 24M17111+160#16195#16035
24M → 40K1652+163#16035#15872
40K → 25.2M773+74#15872#15798
25.2M → Finish10921+88#15798#15710
TOTALS4016395+3621
📊

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