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BOSTON MARATHON 2025

Stephanie Coffin

Bib: 27433•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:07
Rank: #24834
Start → 5K
30:07 | 9:42/mi
10K· 6.21 mi
1:00:09
Rank: #24694 (+140)
5K → 10K
30:02 | 9:40/mi
15K· 9.32 mi
1:30:30
Rank: #24604 (+90)
10K → 15K
30:21 | 9:46/mi
20K· 12.43 mi
2:01:17
Rank: #24446 (+158)
15K → 20K
30:47 | 9:54/mi
Half· 13.11 mi
2:07:54
Rank: #24432 (+14)
20K → Half
6:37 | 9:42/mi
25K· 15.53 mi
2:33:26
Rank: #24455 (-23)
Half → 25K
25:32 | 10:32/mi
30K· 18.64 mi
3:06:31
Rank: #24245 (+210)
25K → 30K
33:05 | 10:39/mi
20M
3:21:27
Rank: #24180 (+65)
30K → 20M
14:56 | 10:59/mi
21M
3:33:38
Rank: #24166 (+14)
20M → 21M
12:11 | 12:11/mi
35K· 21.75 mi
3:41:16
Rank: #24106 (+60)
21M → 35K
7:38 | 10:12/mi
23M
3:54:52
Rank: #24027 (+79)
35K → 23M
13:36 | 10:52/mi
24M
4:05:27
Rank: #23986 (+41)
23M → 24M
10:35 | 10:35/mi
40K· 24.85 mi
4:14:39
Rank: #23944 (+42)
24M → 40K
9:12 | 10:46/mi
25.2M
4:18:37
Rank: #23915 (+29)
40K → 25.2M
3:58 | 11:30/mi
Finish· 26.22 mi
4:28:43
Rank: #23884 (+31)
25.2M → Finish
10:06 | 9:55/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:54
Pace9:45 /mi
2nd Half
Distance13.11 mi
Time2:20:49
Pace10:45 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:3430:079:4230:07
9:42
-
10K
6.21 mi12:19:361:00:099:4130:02
9:40
-0:02
15K
9.32 mi12:49:571:30:309:4330:21
9:46
+0:06
20K
12.43 mi13:20:442:01:179:4630:47
9:54
+0:08
Half
13.11 mi13:27:212:07:549:456:37
9:42
-0:12
25K
15.53 mi13:52:532:33:269:5325:32
10:32
+0:50
30K
18.64 mi14:25:583:06:3110:0033:05
10:39
+0:07
20M
20.00 mi14:40:543:21:2710:0414:56
10:59
+0:20
21M
21.00 mi14:53:053:33:3810:1012:11
12:11
+1:12
35K
21.75 mi15:00:433:41:1610:107:38
10:12
-1:59
23M
23.00 mi15:14:193:54:5210:1313:36
10:52
+0:40
24M
24.00 mi15:24:544:05:2710:1410:35
10:35
-0:17
40K
24.85 mi15:34:064:14:3910:159:12
10:46
+0:11
25.2M
25.20 mi15:38:044:18:3710:163:58
11:30
+0:44
Finish
26.22 mi15:48:104:28:4310:1510:06
9:55
-1:35

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

9:40 /mi

Average Pace

10:15 /mi

Slowest Pace

12:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:00

51% of race

Time at Steady Pace

1:39:38

37% of race

Time at Slower Pace

31:05

12% of race

Average Pace: 10:15 /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 mi11:49:3430:079:4230:07
9:42
#24834
10K
6.21 mi12:19:361:00:099:4130:02
9:40
#24694
15K
9.32 mi12:49:571:30:309:4330:21
9:46
#24604
20K
12.43 mi13:20:442:01:179:4630:47
9:54
#24446
Half
13.11 mi13:27:212:07:549:456:37
9:42
#24432
25K
15.53 mi13:52:532:33:269:5325:32
10:32
#24455
30K
18.64 mi14:25:583:06:3110:0033:05
10:39
#24245
20M
20.00 mi14:40:543:21:2710:0414:56
10:59
#24180
21M
21.00 mi14:53:053:33:3810:1012:11
12:11
#24166
35K
21.75 mi15:00:433:41:1610:107:38
10:12
#24106
23M
23.00 mi15:14:193:54:5210:1313:36
10:52
#24027
24M
24.00 mi15:24:544:05:2710:1410:35
10:35
#23986
40K
24.85 mi15:34:064:14:3910:159:12
10:46
#23944
25.2M
25.20 mi15:38:044:18:3710:163:58
11:30
#23915
Finish
26.22 mi15:48:104:28:4310:1510:06
9:55
#23884
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi24834101271012724483(Top 86%)9945(Top 81%)9945(Top 579%)
10K6.21 mi3.10 mi24694+14010061+6610061+6624529(Top 86%)9979(Top 82%)9979(Top 581%)
15K9.32 mi3.11 mi24604+9010015+4610015+4624483(Top 86%)9945(Top 81%)9945(Top 579%)
20K12.43 mi3.11 mi24446+1589941+749941+7424045(Top 85%)9734(Top 80%)9734(Top 567%)
Half13.11 mi0.68 mi24432+149935+69935+624126(Top 85%)9777(Top 80%)9777(Top 569%)
25K15.53 mi2.42 mi24455-239954-199954-1924429(Top 86%)9977(Top 82%)9977(Top 581%)
30K18.64 mi3.11 mi24245+2109863+919863+9123276(Top 82%)9482(Top 78%)9482(Top 552%)
20M20.00 mi1.36 mi24180+659854+99854+923563(Top 83%)9719(Top 79%)9719(Top 566%)
21M21.00 mi1.00 mi24166+149852+29852+223916(Top 84%)9988(Top 82%)9988(Top 581%)
35K21.75 mi0.75 mi24106+609829+239829+2322467(Top 79%)9277(Top 76%)9277(Top 540%)
23M23.00 mi1.25 mi24027+799808+219808+2122924(Top 81%)9563(Top 78%)9563(Top 557%)
24M24.00 mi1.00 mi23986+419798+109798+1023046(Top 81%)9666(Top 79%)9666(Top 563%)
40K24.85 mi0.85 mi23944+429791+79791+722610(Top 80%)9511(Top 78%)9511(Top 554%)
25.2M25.20 mi0.35 mi23915+299779+129779+1222109(Top 78%)9219(Top 75%)9219(Top 537%)
Finish26.22 mi1.02 mi23884+319776+39776+322673(Top 80%)9508(Top 78%)9508(Top 553%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

24483

Females

9945

F40-44

9945

5K→10K

3.1 - 6.2 mi

Top 86%
×5stories
+79ft-138ft

Overall

24529

Females

9979

F40-44

9979

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

24483

Females

9945

F40-44

9945

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

24045

Females

9734

F40-44

9734

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

24126

Females

9777

F40-44

9777

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

24429

Females

9977

F40-44

9977

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

23276

Females

9482

F40-44

9482

30K→20M

18.6 - 20.0 mi

Top 83%
×5stories
+64ft-50ft

Overall

23563

Females

9719

F40-44

9719

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

23916

Females

9988

F40-44

9988

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

22467

Females

9277

F40-44

9277

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

22924

Females

9563

F40-44

9563

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

23046

Females

9666

F40-44

9666

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22610

Females

9511

F40-44

9511

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22109

Females

9219

F40-44

9219

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2stories
+22ft-21ft

Overall

22673

Females

9508

F40-44

9508

Passing Analysis

Category:
Athletes Passed
1634
Passed By
684
Net Change
+950
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24834
5K → 10K280140+140#24834#24694
10K → 15K18797+90#24694#24604
15K → 20K21355+158#24604#24446
20K → Half3218+14#24446#24432
Half → 25K107130-23#24432#24455
25K → 30K26050+210#24455#24245
30K → 20M10439+65#24245#24180
20M → 21M6046+14#24180#24166
21M → 35K633+60#24166#24106
35K → 23M10627+79#24106#24027
23M → 24M6827+41#24027#23986
24M → 40K6119+42#23986#23944
40K → 25.2M378+29#23944#23915
25.2M → Finish5625+31#23915#23884
TOTALS1634684+950
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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