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BOSTON MARATHON 2025

Holly Swimm

Bib: 31606•F

MA

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
9:54/mi
30:44
↑ 97↓ 3451.5%
10K· 6.21 mi
9:58/mi
1:01:43
↑ 79↓ 1380.4%
15K· 9.32 mi
10:02/mi
1:32:52
↑ 67↓ 78
20K· 12.43 mi
10:08/mi
2:04:22
↑ 106↓ 860.1%
Half· 13.11 mi
10:19/mi
2:11:24
↑ 19↓ 370.5%
25K· 15.53 mi
10:23/mi
2:36:34
↑ 66↓ 880.2%
30K· 18.64 mi
10:38/mi
3:09:36
↑ 181↓ 1480.2%
20M
10:59/mi
3:24:31
↑ 64↓ 500.2%
21M
12:13/mi
3:36:44
↑ 106↓ 241.6%
35K· 21.75 mi
11:07/mi
3:45:03
↑ 17↓ 861.7%
23M
11:01/mi
3:58:51
↑ 23↓ 630.6%
24M
10:38/mi
4:09:29
↓ 821.3%
40K· 24.85 mi
11:36/mi
4:19:24
↓ 200.3%
25.2M
12:05/mi
4:23:34
↑ 13↓ 160.2%
Finish· 26.22 mi
9:57/mi
4:33:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:24
Pace10:01 /mi
2nd Half
Distance13.11 mi
Time2:22:18
Pace10:51 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:1730:449:5430:44
9:54
-
10K
6.21 mi12:27:161:01:439:5630:59
9:58
+0:04
15K
9.32 mi12:58:251:32:529:5831:09
10:02
+0:04
20K
12.43 mi13:29:552:04:2210:0031:30
10:08
+0:06
Half
13.11 mi13:36:572:11:2410:017:02
10:19
+0:11
25K
15.53 mi14:02:072:36:3410:0525:10
10:23
+0:04
30K
18.64 mi14:35:093:09:3610:1033:02
10:38
+0:15
20M
20.00 mi14:50:043:24:3110:1414:55
10:59
+0:21
21M
21.00 mi15:02:173:36:4410:1912:13
12:13
+1:14
35K
21.75 mi15:10:363:45:0310:218:19
11:07
-1:06
23M
23.00 mi15:24:243:58:5110:2313:48
11:01
-0:06
24M
24.00 mi15:35:024:09:2910:2410:38
10:38
-0:23
40K
24.85 mi15:44:574:19:2410:269:55
11:36
+0:58
25.2M
25.20 mi15:49:074:23:3410:284:10
12:05
+0:29
Finish
26.22 mi15:59:154:33:4210:2710:08
9:57
-2:08

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

9:54 /mi

Average Pace

10:27 /mi

Slowest Pace

12:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:30

49% of race

Time at Steady Pace

1:30:47

33% of race

Time at Slower Pace

48:25

18% of race

Average Pace: 10:26 /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 mi11:56:1730:449:5430:44
9:54
#25327
10K
6.21 mi12:27:161:01:439:5630:59
9:58
#25260
15K
9.32 mi12:58:251:32:529:5831:09
10:02
#25193
20K
12.43 mi13:29:552:04:2210:0031:30
10:08
#25038
Half
13.11 mi13:36:572:11:2410:017:02
10:19
#25051
25K
15.53 mi14:02:072:36:3410:0525:10
10:23
#24898
30K
18.64 mi14:35:093:09:3610:1033:02
10:38
#24603
20M
20.00 mi14:50:043:24:3110:1414:55
10:59
#24543
21M
21.00 mi15:02:173:36:4410:1912:13
12:13
#24503
35K
21.75 mi15:10:363:45:0310:218:19
11:07
#24514
23M
23.00 mi15:24:243:58:5110:2313:48
11:01
#24455
24M
24.00 mi15:35:024:09:2910:2410:38
10:38
#24396
40K
24.85 mi15:44:574:19:2410:269:55
11:36
#24408
25.2M
25.20 mi15:49:074:23:3410:284:10
12:05
#24396
Finish
26.22 mi15:59:154:33:4210:2710:08
9:57
#24343
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25327103891038925042(Top 88%)10238(Top 84%)10238(Top 187%)
10K6.21 mi3.10 mi25260+6710375+1410375+1425249(Top 89%)10371(Top 85%)10371(Top 190%)
15K9.32 mi3.11 mi25193+6710330+4510330+4525042(Top 88%)10238(Top 84%)10238(Top 187%)
20K12.43 mi3.11 mi25038+15510253+7710253+7724501(Top 86%)9985(Top 82%)9985(Top 183%)
Half13.11 mi0.68 mi25051-1310268-1510268-1525461(Top 90%)10532(Top 86%)10532(Top 193%)
25K15.53 mi2.42 mi24898+15310199+6910199+6924131(Top 85%)9817(Top 80%)9817(Top 180%)
30K18.64 mi3.11 mi24603+29510061+13810061+13823227(Top 82%)9452(Top 77%)9452(Top 173%)
20M20.00 mi1.36 mi24543+6010038+2310038+2323529(Top 83%)9703(Top 79%)9703(Top 177%)
21M21.00 mi1.00 mi24503+4010037+110037+123947(Top 84%)10007(Top 82%)10007(Top 183%)
35K21.75 mi0.75 mi24514-1110052-1510052-1524449(Top 86%)10312(Top 84%)10312(Top 189%)
23M23.00 mi1.25 mi24455+5910038+1410038+1423263(Top 82%)9747(Top 80%)9747(Top 178%)
24M24.00 mi1.00 mi24396+5910013+2510013+2523142(Top 81%)9712(Top 79%)9712(Top 178%)
40K24.85 mi0.85 mi24408-1210022-910022-924291(Top 86%)10321(Top 84%)10321(Top 189%)
25.2M25.20 mi0.35 mi24396+1210027-510027-523363(Top 82%)9859(Top 81%)9859(Top 180%)
Finish26.22 mi1.02 mi24343+5310019+810019+822736(Top 80%)9547(Top 78%)9547(Top 175%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

25042

Females

10238

F18-39

10238

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

25249

Females

10371

F18-39

10371

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

25042

Females

10238

F18-39

10238

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24501

Females

9985

F18-39

9985

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

25461

Females

10532

F18-39

10532

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

24131

Females

9817

F18-39

9817

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

23227

Females

9452

F18-39

9452

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

23529

Females

9703

F18-39

9703

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

23947

Females

10007

F18-39

10007

21M→35K

21.0 - 21.8 mi

Top 86%
×7story building
+17ft-86ft

Overall

24449

Females

10312

F18-39

10312

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

23263

Females

9747

F18-39

9747

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

23142

Females

9712

F18-39

9712

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24291

Females

10321

F18-39

10321

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23363

Females

9859

F18-39

9859

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

22736

Females

9547

F18-39

9547

Passing Analysis

Category:
Athletes Passed
1587
Passed By
603
Net Change
+984
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25327
5K → 10K211144+67#25327#25260
10K → 15K171104+67#25260#25193
15K → 20K21661+155#25193#25038
20K → Half1831-13#25038#25051
Half → 25K18936+153#25051#24898
25K → 30K31217+295#24898#24603
30K → 20M7919+60#24603#24543
20M → 21M7838+40#24543#24503
21M → 35K2839-11#24503#24514
35K → 23M8829+59#24514#24455
23M → 24M7920+59#24455#24396
24M → 40K2941-12#24396#24408
40K → 25.2M208+12#24408#24396
25.2M → Finish6916+53#24396#24343
TOTALS1587603+984
📊

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