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BOSTON MARATHON 2025

Johanna O'Day

Bib: 27920•F

CA

0:00
0:00
/ mi
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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
10:42/mi
33:14
↑ 97↓ 3451.5%
10K· 6.21 mi
10:54/mi
1:07:06
↑ 79↓ 1380.4%
15K· 9.32 mi
10:46/mi
1:40:34
↑ 67↓ 78
20K· 12.43 mi
10:28/mi
2:13:05
↑ 106↓ 860.1%
Half· 13.11 mi
9:14/mi
2:19:23
↑ 19↓ 370.5%
25K· 15.53 mi
10:13/mi
2:44:10
↑ 66↓ 880.2%
30K· 18.64 mi
11:07/mi
3:18:43
↑ 181↓ 1480.2%
20M
11:12/mi
3:33:56
↑ 64↓ 500.2%
21M
12:15/mi
3:46:11
↑ 106↓ 241.6%
35K· 21.75 mi
10:18/mi
3:53:53
↑ 17↓ 861.7%
23M
10:49/mi
4:07:26
↑ 23↓ 630.6%
24M
9:40/mi
4:17:06
↓ 821.3%
40K· 24.85 mi
9:41/mi
4:25:23
↓ 200.3%
25.2M
13:03/mi
4:29:53
↑ 13↓ 160.2%
Finish· 26.22 mi
8:38/mi
4:38:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:19:23
Pace10:38 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:19:18
Pace10:38 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:3333:1410:4233:14
10:42
-
10K
6.21 mi12:30:251:07:0610:4833:52
10:54
+0:12
15K
9.32 mi13:03:531:40:3410:4733:28
10:46
-0:08
20K
12.43 mi13:36:242:13:0510:4332:31
10:28
-0:18
Half
13.11 mi13:42:422:19:2310:386:18
9:14
-1:14
25K
15.53 mi14:07:292:44:1010:3424:47
10:13
+0:59
30K
18.64 mi14:42:023:18:4310:4034:33
11:07
+0:54
20M
20.00 mi14:57:153:33:5610:4215:13
11:12
+0:05
21M
21.00 mi15:09:303:46:1110:4612:15
12:15
+1:03
35K
21.75 mi15:17:123:53:5310:457:42
10:18
-1:57
23M
23.00 mi15:30:454:07:2610:4513:33
10:49
+0:31
24M
24.00 mi15:40:254:17:0610:439:40
9:40
-1:09
40K
24.85 mi15:48:424:25:2310:418:17
9:41
+0:01
25.2M
25.20 mi15:53:124:29:5310:434:30
13:03
+3:22
Finish
26.22 mi16:02:004:38:4110:388:48
8:38
-4:25

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

8:38 /mi

Average Pace

10:38 /mi

Slowest Pace

13:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

33:03

12% of race

Time at Steady Pace

3:48:53

82% of race

Time at Slower Pace

16:45

6% of race

Average Pace: 10:38 /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 mi11:56:3333:1410:4233:14
10:42
#27111
10K
6.21 mi12:30:251:07:0610:4833:52
10:54
#27018
15K
9.32 mi13:03:531:40:3410:4733:28
10:46
#26770
20K
12.43 mi13:36:242:13:0510:4332:31
10:28
#26336
Half
13.11 mi13:42:422:19:2310:386:18
9:14
#26192
25K
15.53 mi14:07:292:44:1010:3424:47
10:13
#25812
30K
18.64 mi14:42:023:18:4310:4034:33
11:07
#25528
20M
20.00 mi14:57:153:33:5610:4215:13
11:12
#25423
21M
21.00 mi15:09:303:46:1110:4612:15
12:15
#25338
35K
21.75 mi15:17:123:53:5310:457:42
10:18
#25268
23M
23.00 mi15:30:454:07:2610:4513:33
10:49
#25157
24M
24.00 mi15:40:254:17:0610:439:40
9:40
#25036
40K
24.85 mi15:48:424:25:2310:418:17
9:41
#24891
25.2M
25.20 mi15:53:124:29:5310:434:30
13:03
#24898
Finish
26.22 mi16:02:004:38:4110:388:48
8:38
#24755
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27111113921139226354(Top 93%)10977(Top 90%)10977(Top 201%)
10K6.21 mi3.10 mi27018+9311354+3811354+3826919(Top 95%)11317(Top 93%)11317(Top 207%)
15K9.32 mi3.11 mi26770+24811217+13711217+13726354(Top 93%)10977(Top 90%)10977(Top 201%)
20K12.43 mi3.11 mi26336+43410968+24910968+24925127(Top 88%)10332(Top 84%)10332(Top 189%)
Half13.11 mi0.68 mi26192+14410888+8010888+8022685(Top 80%)8989(Top 74%)8989(Top 164%)
25K15.53 mi2.42 mi25812+38010698+19010698+19023761(Top 84%)9622(Top 79%)9622(Top 176%)
30K18.64 mi3.11 mi25528+28410582+11610582+11624234(Top 85%)9989(Top 82%)9989(Top 183%)
20M20.00 mi1.36 mi25423+10510529+5310529+5323976(Top 84%)9946(Top 81%)9946(Top 182%)
21M21.00 mi1.00 mi25338+8510495+3410495+3424003(Top 85%)10037(Top 82%)10037(Top 184%)
35K21.75 mi0.75 mi25268+7010463+3210463+3222642(Top 80%)9365(Top 77%)9365(Top 171%)
23M23.00 mi1.25 mi25157+11110419+4410419+4422779(Top 80%)9489(Top 78%)9489(Top 174%)
24M24.00 mi1.00 mi25036+12110360+5910360+5920233(Top 71%)8217(Top 67%)8217(Top 150%)
40K24.85 mi0.85 mi24891+14510298+6210298+6219392(Top 68%)7844(Top 64%)7844(Top 143%)
25.2M25.20 mi0.35 mi24898-710303-510303-525065(Top 88%)10720(Top 88%)10720(Top 196%)
Finish26.22 mi1.02 mi24755+14310239+6410239+6417020(Top 60%)6588(Top 54%)6588(Top 120%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

26354

Females

10977

F18-39

10977

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

26919

Females

11317

F18-39

11317

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

26354

Females

10977

F18-39

10977

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

25127

Females

10332

F18-39

10332

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

22685

Females

8989

F18-39

8989

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23761

Females

9622

F18-39

9622

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

24234

Females

9989

F18-39

9989

30K→20M

18.6 - 20.0 mi

Top 84%
×5story building
+64ft-50ft

Overall

23976

Females

9946

F18-39

9946

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

24003

Females

10037

F18-39

10037

21M→35K

21.0 - 21.8 mi

Top 80%
×7story building
+17ft-86ft

Overall

22642

Females

9365

F18-39

9365

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22779

Females

9489

F18-39

9489

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20233

Females

8217

F18-39

8217

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19392

Females

7844

F18-39

7844

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

25065

Females

10720

F18-39

10720

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

17020

Females

6588

F18-39

6588

Passing Analysis

Category:
Athletes Passed
2545
Passed By
189
Net Change
+2356
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27111
5K → 10K197104+93#27111#27018
10K → 15K26315+248#27018#26770
15K → 20K4395+434#26770#26336
20K → Half1440+144#26336#26192
Half → 25K3811+380#26192#25812
25K → 30K29915+284#25812#25528
30K → 20M11813+105#25528#25423
20M → 21M9813+85#25423#25338
21M → 35K700+70#25338#25268
35K → 23M1165+111#25268#25157
23M → 24M1210+121#25157#25036
24M → 40K1461+145#25036#24891
40K → 25.2M916-7#24891#24898
25.2M → Finish1441+143#24898#24755
TOTALS2545189+2356
📊

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