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BOSTON MARATHON 2025

Callie Kawaguchi

Bib: 15491•F

OR

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
7:44/mi
24:01
↑ 97↓ 3451.5%
10K· 6.21 mi
7:44/mi
48:02
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:11:47
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:36:18
↑ 106↓ 860.1%
Half· 13.11 mi
7:48/mi
1:41:37
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:02:58
↑ 66↓ 880.2%
30K· 18.64 mi
9:04/mi
2:31:09
↑ 181↓ 1480.2%
20M
9:21/mi
2:43:51
↑ 64↓ 500.2%
21M
10:24/mi
2:54:15
↑ 106↓ 241.6%
35K· 21.75 mi
8:51/mi
3:00:52
↑ 17↓ 861.7%
23M
10:27/mi
3:13:57
↑ 23↓ 630.6%
24M
9:17/mi
3:23:14
↓ 821.3%
40K· 24.85 mi
10:19/mi
3:32:03
↓ 200.3%
25.2M
12:25/mi
3:36:20
↑ 13↓ 160.2%
Finish· 26.22 mi
9:10/mi
3:45:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:37
Pace7:45 /mi
2nd Half
Distance13.11 mi
Time2:04:03
Pace9:28 /mi
📊Positive Split: 22.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:2424:017:4424:01
7:44
-
10K
6.21 mi11:20:2548:027:4424:01
7:44
0:00
15K
9.32 mi11:44:101:11:477:4223:45
7:39
-0:05
20K
12.43 mi12:08:411:36:187:4524:31
7:53
+0:14
Half
13.11 mi12:14:001:41:377:455:19
7:48
-0:05
25K
15.53 mi12:35:212:02:587:5521:21
8:48
+1:00
30K
18.64 mi13:03:322:31:098:0728:11
9:04
+0:16
20M
20.00 mi13:16:142:43:518:1212:42
9:21
+0:17
21M
21.00 mi13:26:382:54:158:1810:24
10:24
+1:03
35K
21.75 mi13:33:153:00:528:196:37
8:51
-1:33
23M
23.00 mi13:46:203:13:578:2613:05
10:27
+1:36
24M
24.00 mi13:55:373:23:148:289:17
9:17
-1:10
40K
24.85 mi14:04:263:32:038:328:49
10:19
+1:02
25.2M
25.20 mi14:08:433:36:208:354:17
12:25
+2:06
Finish
26.22 mi14:18:033:45:408:379:20
9:10
-3:15

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

7:39 /mi

Average Pace

8:37 /mi

Slowest Pace

12:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:37

45% of race

Time at Steady Pace

1:27:28

39% of race

Time at Slower Pace

36:35

16% of race

Average Pace: 8:36 /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 mi10:56:2424:017:4424:01
7:44
#14239
10K
6.21 mi11:20:2548:027:4424:01
7:44
#14163
15K
9.32 mi11:44:101:11:477:4223:45
7:39
#13762
20K
12.43 mi12:08:411:36:187:4524:31
7:53
#13798
Half
13.11 mi12:14:001:41:377:455:19
7:48
#13812
25K
15.53 mi12:35:212:02:587:5521:21
8:48
#14867
30K
18.64 mi13:03:322:31:098:0728:11
9:04
#15581
20M
20.00 mi13:16:142:43:518:1212:42
9:21
#15812
21M
21.00 mi13:26:382:54:158:1810:24
10:24
#16069
35K
21.75 mi13:33:153:00:528:196:37
8:51
#16093
23M
23.00 mi13:46:203:13:578:2613:05
10:27
#16555
24M
24.00 mi13:55:373:23:148:289:17
9:17
#16682
40K
24.85 mi14:04:263:32:038:328:49
10:19
#16967
25.2M
25.20 mi14:08:433:36:208:354:17
12:25
#17180
Finish
26.22 mi14:18:033:45:408:379:20
9:10
#17304
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi142394063406313017(Top 46%)3459(Top 28%)3459(Top 63%)
10K6.21 mi3.10 mi14163+764039+244039+2414184(Top 50%)4072(Top 33%)4072(Top 74%)
15K9.32 mi3.11 mi13762+4013834+2053834+20513017(Top 46%)3459(Top 28%)3459(Top 63%)
20K12.43 mi3.11 mi13798-363900-663900-6614028(Top 49%)4116(Top 34%)4116(Top 75%)
Half13.11 mi0.68 mi13812-143916-163916-1614314(Top 50%)4265(Top 35%)4265(Top 78%)
25K15.53 mi2.42 mi14867-10554547-6314547-63118964(Top 67%)6955(Top 57%)6955(Top 127%)
30K18.64 mi3.11 mi15581-7144990-4434990-44318037(Top 64%)6592(Top 54%)6592(Top 121%)
20M20.00 mi1.36 mi15812-2315159-1695159-16918513(Top 65%)7006(Top 57%)7006(Top 128%)
21M21.00 mi1.00 mi16069-2575337-1785337-17819709(Top 69%)7743(Top 63%)7743(Top 142%)
35K21.75 mi0.75 mi16093-245375-385375-3817499(Top 62%)6625(Top 54%)6625(Top 121%)
23M23.00 mi1.25 mi16555-4625668-2935668-29321883(Top 77%)9003(Top 74%)9003(Top 165%)
24M24.00 mi1.00 mi16682-1275766-985766-9818752(Top 66%)7409(Top 61%)7409(Top 135%)
40K24.85 mi0.85 mi16967-2855968-2025968-20221412(Top 75%)8876(Top 73%)8876(Top 162%)
25.2M25.20 mi0.35 mi17180-2136102-1346102-13424061(Top 85%)10190(Top 83%)10190(Top 186%)
Finish26.22 mi1.02 mi17304-1246191-896191-8919787(Top 70%)8026(Top 66%)8026(Top 147%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13017

Females

3459

F18-39

3459

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

14184

Females

4072

F18-39

4072

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13017

Females

3459

F18-39

3459

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

14028

Females

4116

F18-39

4116

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

14314

Females

4265

F18-39

4265

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

18964

Females

6955

F18-39

6955

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18037

Females

6592

F18-39

6592

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

18513

Females

7006

F18-39

7006

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

19709

Females

7743

F18-39

7743

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

17499

Females

6625

F18-39

6625

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21883

Females

9003

F18-39

9003

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

18752

Females

7409

F18-39

7409

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

21412

Females

8876

F18-39

8876

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24061

Females

10190

F18-39

10190

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

19787

Females

8026

F18-39

8026

Passing Analysis

Category:
Athletes Passed
1446
Passed By
4511
Net Change
-3065
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14239
5K → 10K307231+76#14239#14163
10K → 15K45655+401#14163#13762
15K → 20K211247-36#13762#13798
20K → Half2842-14#13798#13812
Half → 25K361091-1055#13812#14867
25K → 30K95809-714#14867#15581
30K → 20M63294-231#15581#15812
20M → 21M46303-257#15812#16069
21M → 35K5983-24#16069#16093
35K → 23M31493-462#16093#16555
23M → 24M41168-127#16555#16682
24M → 40K29314-285#16682#16967
40K → 25.2M7220-213#16967#17180
25.2M → Finish37161-124#17180#17304
TOTALS14464511-3065
📊

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