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BOSTON MARATHON 2025

Gretchen Swarr

Bib: 20833•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
26:03
Rank: #19222
Start → 5K
26:03 | 8:23/mi
10K· 6.21 mi
52:26
Rank: #19475 (-253)
5K → 10K
26:23 | 8:30/mi
15K· 9.32 mi
1:18:36
Rank: #19247 (+228)
10K → 15K
26:10 | 8:25/mi
20K· 12.43 mi
1:45:57
Rank: #19426 (-179)
15K → 20K
27:21 | 8:48/mi
Half· 13.11 mi
1:51:51
Rank: #19471 (-45)
20K → Half
5:54 | 8:39/mi
25K· 15.53 mi
2:13:22
Rank: #19426 (+45)
Half → 25K
21:31 | 8:52/mi
30K· 18.64 mi
2:42:07
Rank: #19316 (+110)
25K → 30K
28:45 | 9:15/mi
20M
2:55:14
Rank: #19359 (-43)
30K → 20M
13:07 | 9:39/mi
21M
3:05:48
Rank: #19421 (-62)
20M → 21M
10:34 | 10:34/mi
35K· 21.75 mi
3:12:46
Rank: #19436 (-15)
21M → 35K
6:58 | 9:19/mi
23M
3:25:15
Rank: #19533 (-97)
35K → 23M
12:29 | 9:58/mi
24M
3:35:08
Rank: #19618 (-85)
23M → 24M
9:53 | 9:53/mi
40K· 24.85 mi
3:43:47
Rank: #19705 (-87)
24M → 40K
8:39 | 10:07/mi
25.2M
3:47:34
Rank: #19726 (-21)
40K → 25.2M
3:47 | 10:58/mi
Finish· 26.22 mi
3:57:00
Rank: #19742 (-16)
25.2M → Finish
9:26 | 9:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:51
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time2:05:09
Pace9:33 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3926:038:2326:03
8:23
-
10K
6.21 mi11:46:0252:268:2626:23
8:30
+0:07
15K
9.32 mi12:12:121:18:368:2626:10
8:25
-0:05
20K
12.43 mi12:39:331:45:578:3227:21
8:48
+0:23
Half
13.11 mi12:45:271:51:518:325:54
8:39
-0:09
25K
15.53 mi13:06:582:13:228:3521:31
8:52
+0:13
30K
18.64 mi13:35:432:42:078:4228:45
9:15
+0:23
20M
20.00 mi13:48:502:55:148:4613:07
9:39
+0:24
21M
21.00 mi13:59:243:05:488:5110:34
10:34
+0:55
35K
21.75 mi14:06:223:12:468:526:58
9:19
-1:15
23M
23.00 mi14:18:513:25:158:5512:29
9:58
+0:39
24M
24.00 mi14:28:443:35:088:589:53
9:53
-0:05
40K
24.85 mi14:37:233:43:479:008:39
10:07
+0:14
25.2M
25.20 mi14:41:103:47:349:023:47
10:58
+0:51
Finish
26.22 mi14:50:363:57:009:039:26
9:15
-1:43

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

8:23 /mi

Average Pace

9:03 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:51

47% of race

Time at Steady Pace

1:06:40

28% of race

Time at Slower Pace

58:29

25% of race

Average Pace: 9:02 /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 mi11:19:3926:038:2326:03
8:23
#19222
10K
6.21 mi11:46:0252:268:2626:23
8:30
#19475
15K
9.32 mi12:12:121:18:368:2626:10
8:25
#19247
20K
12.43 mi12:39:331:45:578:3227:21
8:48
#19426
Half
13.11 mi12:45:271:51:518:325:54
8:39
#19471
25K
15.53 mi13:06:582:13:228:3521:31
8:52
#19426
30K
18.64 mi13:35:432:42:078:4228:45
9:15
#19316
20M
20.00 mi13:48:502:55:148:4613:07
9:39
#19359
21M
21.00 mi13:59:243:05:488:5110:34
10:34
#19421
35K
21.75 mi14:06:223:12:468:526:58
9:19
#19436
23M
23.00 mi14:18:513:25:158:5512:29
9:58
#19533
24M
24.00 mi14:28:443:35:088:589:53
9:53
#19618
40K
24.85 mi14:37:233:43:479:008:39
10:07
#19705
25.2M
25.20 mi14:41:103:47:349:023:47
10:58
#19726
Finish
26.22 mi14:50:363:57:009:039:26
9:15
#19742
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi192227035703518855(Top 66%)6815(Top 56%)6815(Top 397%)
10K6.21 mi3.10 mi19475-2537169-1347169-13419756(Top 70%)7336(Top 60%)7336(Top 427%)
15K9.32 mi3.11 mi19247+2287035+1347035+13418855(Top 66%)6815(Top 56%)6815(Top 397%)
20K12.43 mi3.11 mi19426-1797142-1077142-10719954(Top 70%)7455(Top 61%)7455(Top 434%)
Half13.11 mi0.68 mi19471-457173-317173-3120095(Top 71%)7535(Top 62%)7535(Top 439%)
25K15.53 mi2.42 mi19426+457159+147159+1419322(Top 68%)7159(Top 59%)7159(Top 417%)
30K18.64 mi3.11 mi19316+1107141+187141+1818921(Top 67%)7079(Top 58%)7079(Top 412%)
20M20.00 mi1.36 mi19359-437188-477188-4719790(Top 70%)7670(Top 63%)7670(Top 446%)
21M21.00 mi1.00 mi19421-627246-587246-5820231(Top 71%)8036(Top 66%)8036(Top 468%)
35K21.75 mi0.75 mi19436-157267-217267-2119640(Top 69%)7788(Top 64%)7788(Top 453%)
23M23.00 mi1.25 mi19533-977362-957362-9520394(Top 72%)8240(Top 67%)8240(Top 480%)
24M24.00 mi1.00 mi19618-857437-757437-7521009(Top 74%)8602(Top 70%)8602(Top 501%)
40K24.85 mi0.85 mi19705-877498-617498-6120841(Top 73%)8576(Top 70%)8576(Top 499%)
25.2M25.20 mi0.35 mi19726-217518-207518-2020558(Top 72%)8436(Top 69%)8436(Top 491%)
Finish26.22 mi1.02 mi19742-167540-227540-2220226(Top 71%)8260(Top 68%)8260(Top 481%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18855

Females

6815

F40-44

6815

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

19756

Females

7336

F40-44

7336

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18855

Females

6815

F40-44

6815

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

19954

Females

7455

F40-44

7455

20K→Half

12.4 - 13.1 mi

Top 71%
×2stories
+19ft-37ft

Overall

20095

Females

7535

F40-44

7535

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19322

Females

7159

F40-44

7159

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

18921

Females

7079

F40-44

7079

30K→20M

18.6 - 20.0 mi

Top 70%
×5stories
+64ft-50ft

Overall

19790

Females

7670

F40-44

7670

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

20231

Females

8036

F40-44

8036

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

19640

Females

7788

F40-44

7788

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

20394

Females

8240

F40-44

8240

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

21009

Females

8602

F40-44

8602

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20841

Females

8576

F40-44

8576

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20558

Females

8436

F40-44

8436

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2stories
+22ft-21ft

Overall

20226

Females

8260

F40-44

8260

Passing Analysis

Category:
Athletes Passed
1535
Passed By
2055
Net Change
-520
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19222
5K → 10K141394-253#19222#19475
10K → 15K334106+228#19475#19247
15K → 20K143322-179#19247#19426
20K → Half2368-45#19426#19471
Half → 25K189144+45#19471#19426
25K → 30K265155+110#19426#19316
30K → 20M88131-43#19316#19359
20M → 21M84146-62#19359#19421
21M → 35K5267-15#19421#19436
35K → 23M67164-97#19436#19533
23M → 24M39124-85#19533#19618
24M → 40K38125-87#19618#19705
40K → 25.2M2142-21#19705#19726
25.2M → Finish5167-16#19726#19742
TOTALS15352055-520
📊

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