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BOSTON MARATHON 2025

Grace Callahan

Bib: 32219•F

MA

0:00
0:00
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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

Start
0:00:00
Race begins
5K· 3.11 mi
27:14
Rank: #21336
Start → 5K
27:14 | 8:46/mi
10K· 6.21 mi
53:55
Rank: #20789 (+547)
5K → 10K
26:41 | 8:35/mi
15K· 9.32 mi
1:21:05
Rank: #20750 (+39)
10K → 15K
27:10 | 8:45/mi
20K· 12.43 mi
1:47:34
Rank: #20159 (+591)
15K → 20K
26:29 | 8:31/mi
Half· 13.11 mi
1:53:08
Rank: #20015 (+144)
20K → Half
5:34 | 8:10/mi
25K· 15.53 mi
2:13:59
Rank: #19653 (+362)
Half → 25K
20:51 | 8:36/mi
30K· 18.64 mi
2:41:33
Rank: #19147 (+506)
25K → 30K
27:34 | 8:52/mi
20M
2:53:25
Rank: #18850 (+297)
30K → 20M
11:52 | 8:44/mi
21M
3:02:25
Rank: #18532 (+318)
20M → 21M
9:00 | 9:00/mi
35K· 21.75 mi
3:08:45
Rank: #18405 (+127)
21M → 35K
6:20 | 8:28/mi
23M
3:19:43
Rank: #18189 (+216)
35K → 23M
10:58 | 8:46/mi
24M
3:28:16
Rank: #18007 (+182)
23M → 24M
8:33 | 8:33/mi
40K· 24.85 mi
3:36:07
Rank: #17978 (+29)
24M → 40K
7:51 | 9:11/mi
25.2M
3:39:12
Rank: #17883 (+95)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:47:27
Rank: #17721 (+162)
25.2M → Finish
8:15 | 8:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:08
Pace8:38 /mi
2nd Half
Distance13.11 mi
Time1:54:19
Pace8:43 /mi
📊Positive Split: 1.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:0427:148:4627:14
8:46
-
10K
6.21 mi12:18:4553:558:4126:41
8:35
-0:11
15K
9.32 mi12:45:551:21:058:4227:10
8:45
+0:10
20K
12.43 mi13:12:241:47:348:3926:29
8:31
-0:14
Half
13.11 mi13:17:581:53:088:385:34
8:10
-0:21
25K
15.53 mi13:38:492:13:598:3820:51
8:36
+0:26
30K
18.64 mi14:06:232:41:338:4027:34
8:52
+0:16
20M
20.00 mi14:18:152:53:258:4011:52
8:44
-0:08
21M
21.00 mi14:27:153:02:258:419:00
9:00
+0:16
35K
21.75 mi14:33:353:08:458:416:20
8:28
-0:32
23M
23.00 mi14:44:333:19:438:4110:58
8:46
+0:18
24M
24.00 mi14:53:063:28:168:418:33
8:33
-0:13
40K
24.85 mi15:00:573:36:078:427:51
9:11
+0:38
25.2M
25.20 mi15:04:023:39:128:423:05
8:56
-0:15
Finish
26.22 mi15:12:173:47:278:418:15
8:06
-0:50

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

8:06 /mi

Average Pace

8:41 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:27:31

91% of race

Time at Steady Pace

19:56

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:40 /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 mi11:52:0427:148:4627:14
8:46
#21336
10K
6.21 mi12:18:4553:558:4126:41
8:35
#20789
15K
9.32 mi12:45:551:21:058:4227:10
8:45
#20750
20K
12.43 mi13:12:241:47:348:3926:29
8:31
#20159
Half
13.11 mi13:17:581:53:088:385:34
8:10
#20015
25K
15.53 mi13:38:492:13:598:3820:51
8:36
#19653
30K
18.64 mi14:06:232:41:338:4027:34
8:52
#19147
20M
20.00 mi14:18:152:53:258:4011:52
8:44
#18850
21M
21.00 mi14:27:153:02:258:419:00
9:00
#18532
35K
21.75 mi14:33:353:08:458:416:20
8:28
#18405
23M
23.00 mi14:44:333:19:438:4110:58
8:46
#18189
24M
24.00 mi14:53:063:28:168:418:33
8:33
#18007
40K
24.85 mi15:00:573:36:078:427:51
9:11
#17978
25.2M
25.20 mi15:04:023:39:128:423:05
8:56
#17883
Finish
26.22 mi15:12:173:47:278:418:15
8:06
#17721
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi213368259825920723(Top 73%)7837(Top 64%)7837(Top 143%)
10K6.21 mi3.10 mi20789+5477932+3277932+32720301(Top 71%)7634(Top 62%)7634(Top 140%)
15K9.32 mi3.11 mi20750+397894+387894+3820723(Top 73%)7837(Top 64%)7837(Top 143%)
20K12.43 mi3.11 mi20159+5917563+3317563+33118414(Top 65%)6577(Top 54%)6577(Top 120%)
Half13.11 mi0.68 mi20015+1447482+817482+8117092(Top 60%)5830(Top 48%)5830(Top 107%)
25K15.53 mi2.42 mi19653+3627288+1947288+19417815(Top 63%)6321(Top 52%)6321(Top 116%)
30K18.64 mi3.11 mi19147+5067042+2467042+24617018(Top 60%)6043(Top 49%)6043(Top 110%)
20M20.00 mi1.36 mi18850+2976884+1586884+15815304(Top 54%)5219(Top 43%)5219(Top 95%)
21M21.00 mi1.00 mi18532+3186739+1456739+14513559(Top 48%)4407(Top 36%)4407(Top 81%)
35K21.75 mi0.75 mi18405+1276682+576682+5715312(Top 54%)5423(Top 44%)5423(Top 99%)
23M23.00 mi1.25 mi18189+2166594+886594+8814917(Top 53%)5297(Top 43%)5297(Top 97%)
24M24.00 mi1.00 mi18007+1826522+726522+7214868(Top 52%)5323(Top 44%)5323(Top 97%)
40K24.85 mi0.85 mi17978+296536-146536-1417280(Top 61%)6738(Top 55%)6738(Top 123%)
25.2M25.20 mi0.35 mi17883+956492+446492+4411586(Top 41%)3823(Top 31%)3823(Top 70%)
Finish26.22 mi1.02 mi17721+1626423+696423+6913606(Top 48%)4764(Top 39%)4764(Top 87%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21stories
+97ft-345ft

Overall

20723

Females

7837

F18-39

7837

5K→10K

3.1 - 6.2 mi

Top 71%
×5stories
+79ft-138ft

Overall

20301

Females

7634

F18-39

7634

10K→15K

6.2 - 9.3 mi

Top 73%
×3stories
+67ft-78ft

Overall

20723

Females

7837

F18-39

7837

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

18414

Females

6577

F18-39

6577

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

17092

Females

5830

F18-39

5830

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

17815

Females

6321

F18-39

6321

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

17018

Females

6043

F18-39

6043

30K→20M

18.6 - 20.0 mi

Top 54%
×5stories
+64ft-50ft

Overall

15304

Females

5219

F18-39

5219

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

13559

Females

4407

F18-39

4407

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

15312

Females

5423

F18-39

5423

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

14917

Females

5297

F18-39

5297

23M→24M

23.0 - 24.0 mi

Top 52%
×6stories
+12ft-82ft

Overall

14868

Females

5323

F18-39

5323

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

17280

Females

6738

F18-39

6738

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11586

Females

3823

F18-39

3823

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

13606

Females

4764

F18-39

4764

Passing Analysis

Category:
Athletes Passed
4046
Passed By
431
Net Change
+3615
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21336
5K → 10K659112+547#21336#20789
10K → 15K206167+39#20789#20750
15K → 20K60312+591#20750#20159
20K → Half1451+144#20159#20015
Half → 25K37715+362#20015#19653
25K → 30K53630+506#19653#19147
30K → 20M3025+297#19147#18850
20M → 21M3213+318#18850#18532
21M → 35K1347+127#18532#18405
35K → 23M22610+216#18405#18189
23M → 24M1853+182#18189#18007
24M → 40K8556+29#18007#17978
40K → 25.2M961+95#17978#17883
25.2M → Finish1719+162#17883#17721
TOTALS4046431+3615
📊

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