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BOSTON MARATHON 2025

Molly Harrington

Bib: 31554•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
9:55/mi
30:48
↑ 97↓ 3451.5%
10K· 6.21 mi
9:49/mi
1:01:18
↑ 79↓ 1380.4%
15K· 9.32 mi
9:47/mi
1:31:43
↑ 67↓ 78
20K· 12.43 mi
10:10/mi
2:03:17
↑ 106↓ 860.1%
Half· 13.11 mi
11:02/mi
2:10:49
↑ 19↓ 370.5%
25K· 15.53 mi
14:14/mi
2:45:20
↑ 66↓ 880.2%
30K· 18.64 mi
15:53/mi
3:34:41
↑ 181↓ 1480.2%
20M
19:21/mi
4:00:59
↑ 64↓ 500.2%
21M
20:27/mi
4:21:26
↑ 106↓ 241.6%
35K· 21.75 mi
14:06/mi
4:31:59
↑ 17↓ 861.7%
23M
15:15/mi
4:51:05
↑ 23↓ 630.6%
24M
14:31/mi
5:05:36
↓ 821.3%
40K· 24.85 mi
14:43/mi
5:18:11
↓ 200.3%
25.2M
12:17/mi
5:22:25
↑ 13↓ 160.2%
Finish· 26.22 mi
10:24/mi
5:33:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:49
Pace9:59 /mi
2nd Half
Distance13.11 mi
Time3:22:12
Pace15:25 /mi
📊Positive Split: 54.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:4830:489:5530:48
9:55
-
10K
6.21 mi12:25:181:01:189:5230:30
9:49
-0:06
15K
9.32 mi12:55:431:31:439:5030:25
9:47
-0:02
20K
12.43 mi13:27:172:03:179:5531:34
10:10
+0:23
Half
13.11 mi13:34:492:10:499:597:32
11:02
+0:52
25K
15.53 mi14:09:202:45:2010:3934:31
14:14
+3:12
30K
18.64 mi14:58:413:34:4111:3149:21
15:53
+1:39
20M
20.00 mi15:24:594:00:5912:0326:18
19:21
+3:28
21M
21.00 mi15:45:264:21:2612:2720:27
20:27
+1:06
35K
21.75 mi15:55:594:31:5912:3010:33
14:06
-6:21
23M
23.00 mi16:15:054:51:0512:3919:06
15:15
+1:09
24M
24.00 mi16:29:365:05:3612:4414:31
14:31
-0:44
40K
24.85 mi16:42:115:18:1112:4812:35
14:43
+0:12
25.2M
25.20 mi16:46:255:22:2512:484:14
12:17
-2:26
Finish
26.22 mi16:57:015:33:0112:4310:36
10:24
-1:53

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

9:47 /mi

Average Pace

12:43 /mi

Slowest Pace

20:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:39

44% of race

Time at Steady Pace

1:31:16

27% of race

Time at Slower Pace

1:36:06

29% of race

Average Pace: 12:42 /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 mi11:54:4830:489:5530:48
9:55
#25379
10K
6.21 mi12:25:181:01:189:5230:30
9:49
#25103
15K
9.32 mi12:55:431:31:439:5030:25
9:47
#24905
20K
12.43 mi13:27:172:03:179:5531:34
10:10
#24806
Half
13.11 mi13:34:492:10:499:597:32
11:02
#24942
25K
15.53 mi14:09:202:45:2010:3934:31
14:14
#25944
30K
18.64 mi14:58:413:34:4111:3149:21
15:53
#26800
20M
20.00 mi15:24:594:00:5912:0326:18
19:21
#27233
21M
21.00 mi15:45:264:21:2612:2720:27
20:27
#27470
35K
21.75 mi15:55:594:31:5912:3010:33
14:06
#27493
23M
23.00 mi16:15:054:51:0512:3919:06
15:15
#27555
24M
24.00 mi16:29:365:05:3612:4414:31
14:31
#27592
40K
24.85 mi16:42:115:18:1112:4812:35
14:43
#27606
25.2M
25.20 mi16:46:255:22:2512:484:14
12:17
#27584
Finish
26.22 mi16:57:015:33:0112:4310:36
10:24
#27514
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25379104191041924522(Top 86%)9971(Top 82%)9971(Top 182%)
10K6.21 mi3.10 mi25103+27610281+13810281+13824887(Top 88%)10174(Top 83%)10174(Top 186%)
15K9.32 mi3.11 mi24905+19810176+10510176+10524522(Top 86%)9971(Top 82%)9971(Top 182%)
20K12.43 mi3.11 mi24806+9910126+5010126+5024549(Top 86%)10019(Top 82%)10019(Top 183%)
Half13.11 mi0.68 mi24942-13610209-8310209-8326552(Top 93%)11154(Top 91%)11154(Top 204%)
25K15.53 mi2.42 mi25944-100210764-55510764-55527995(Top 99%)12011(Top 98%)12011(Top 220%)
30K18.64 mi3.11 mi26800-85611286-52211286-52228251(Top 99%)12167(Top 100%)12167(Top 222%)
20M20.00 mi1.36 mi27233-43311546-26011546-26028372(Top 100%)12220(Top 100%)12220(Top 223%)
21M21.00 mi1.00 mi27470-23711695-14911695-14928376(Top 100%)12217(Top 100%)12217(Top 223%)
35K21.75 mi0.75 mi27493-2311711-1611711-1627739(Top 98%)11980(Top 98%)11980(Top 219%)
23M23.00 mi1.25 mi27555-6211752-4111752-4128006(Top 99%)12094(Top 99%)12094(Top 221%)
24M24.00 mi1.00 mi27592-3711779-2711779-2727882(Top 98%)12061(Top 99%)12061(Top 221%)
40K24.85 mi0.85 mi27606-1411796-1711796-1727632(Top 97%)11940(Top 98%)11940(Top 218%)
25.2M25.20 mi0.35 mi27584+2211783+1311783+1323715(Top 83%)10045(Top 82%)10045(Top 184%)
Finish26.22 mi1.02 mi27514+7011743+4011743+4024027(Top 85%)10192(Top 83%)10192(Top 186%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

24522

Females

9971

F18-39

9971

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

24887

Females

10174

F18-39

10174

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

24522

Females

9971

F18-39

9971

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24549

Females

10019

F18-39

10019

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

26552

Females

11154

F18-39

11154

Half→25K

13.1 - 15.5 mi

Top 99%
×4story building
+66ft-88ft

Overall

27995

Females

12011

F18-39

12011

25K→30K

15.5 - 18.6 mi

Top 99%
×9story building
+181ft-148ft

Overall

28251

Females

12167

F18-39

12167

30K→20M

18.6 - 20.0 mi

Top 100%
×5story building
+64ft-50ft

Overall

28372

Females

12220

F18-39

12220

20M→21M

20.0 - 21.0 mi

Top 100%
×8story building
+106ft-24ft

Overall

28376

Females

12217

F18-39

12217

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

27739

Females

11980

F18-39

11980

35K→23M

21.8 - 23.0 mi

Top 99%
×5story building
+23ft-63ft

Overall

28006

Females

12094

F18-39

12094

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

27882

Females

12061

F18-39

12061

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

27632

Females

11940

F18-39

11940

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23715

Females

10045

F18-39

10045

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2story building
+22ft-21ft

Overall

24027

Females

10192

F18-39

10192

Passing Analysis

Category:
Athletes Passed
910
Passed By
3045
Net Change
-2135
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25379
5K → 10K33761+276#25379#25103
10K → 15K24446+198#25103#24905
15K → 20K18687+99#24905#24806
20K → Half5141-136#24806#24942
Half → 25K41006-1002#24942#25944
25K → 30K5861-856#25944#26800
30K → 20M0433-433#26800#27233
20M → 21M1238-237#27233#27470
21M → 35K427-23#27470#27493
35K → 23M567-62#27493#27555
23M → 24M1148-37#27555#27592
24M → 40K1226-14#27592#27606
40K → 25.2M242+22#27606#27584
25.2M → Finish722+70#27584#27514
TOTALS9103045-2135
📊

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