Boston Marathon logo
BOSTON MARATHON 2025

Afton Izu

Bib: 13624•F

TN

0:00
0:00
/ mi
Be the first to cheer!
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
24:46
Rank: #16380
Start → 5K
24:46 | 7:58/mi
10K· 6.21 mi
50:50
Rank: #17850 (-1470)
5K → 10K
26:04 | 8:23/mi
15K· 9.32 mi
1:16:29
Rank: #17794 (+56)
10K → 15K
25:39 | 8:15/mi
20K· 12.43 mi
1:42:35
Rank: #17723 (+71)
15K → 20K
26:06 | 8:24/mi
Half· 13.11 mi
1:49:02
Rank: #18079 (-356)
20K → Half
6:27 | 9:27/mi
25K· 15.53 mi
2:09:35
Rank: #17876 (+203)
Half → 25K
20:33 | 8:29/mi
30K· 18.64 mi
2:40:36
Rank: #18846 (-970)
25K → 30K
31:01 | 9:59/mi
20M
2:53:04
Rank: #18748 (+98)
30K → 20M
12:28 | 9:10/mi
21M
3:02:42
Rank: #18619 (+129)
20M → 21M
9:38 | 9:38/mi
35K· 21.75 mi
3:09:41
Rank: #18671 (-52)
21M → 35K
6:59 | 9:20/mi
23M
3:22:27
Rank: #18886 (-215)
35K → 23M
12:46 | 10:12/mi
24M
3:32:57
Rank: #19157 (-271)
23M → 24M
10:30 | 10:30/mi
40K· 24.85 mi
3:42:52
Rank: #19499 (-342)
24M → 40K
9:55 | 11:36/mi
25.2M
3:46:20
Rank: #19460 (+39)
40K → 25.2M
3:28 | 10:03/mi
Finish· 26.22 mi
3:55:03
Rank: #19346 (+114)
25.2M → Finish
8:43 | 8:33/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:02
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time2:06:01
Pace9:37 /mi
📊Positive Split: 15.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:59:2424:467:5824:46
7:58
-
10K
6.21 mi11:25:2850:508:1126:04
8:23
+0:25
15K
9.32 mi11:51:071:16:298:1225:39
8:15
-0:08
20K
12.43 mi12:17:131:42:358:1526:06
8:24
+0:09
Half
13.11 mi12:23:401:49:028:196:27
9:27
+1:03
25K
15.53 mi12:44:132:09:358:2120:33
8:29
-0:58
30K
18.64 mi13:15:142:40:368:3731:01
9:59
+1:30
20M
20.00 mi13:27:422:53:048:3912:28
9:10
-0:49
21M
21.00 mi13:37:203:02:428:429:38
9:38
+0:28
35K
21.75 mi13:44:193:09:418:436:59
9:20
-0:18
23M
23.00 mi13:57:053:22:278:4812:46
10:12
+0:52
24M
24.00 mi14:07:353:32:578:5210:30
10:30
+0:18
40K
24.85 mi14:17:303:42:528:589:55
11:36
+1:06
25.2M
25.20 mi14:20:583:46:208:593:28
10:03
-1:33
Finish
26.22 mi14:29:413:55:038:588:43
8:33
-1:30

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

7:58 /mi

Average Pace

8:58 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:51

56% of race

Time at Steady Pace

35:32

15% of race

Time at Slower Pace

1:07:40

29% of race

Average Pace: 8:58 /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 mi10:59:2424:467:5824:46
7:58
#16380
10K
6.21 mi11:25:2850:508:1126:04
8:23
#17850
15K
9.32 mi11:51:071:16:298:1225:39
8:15
#17794
20K
12.43 mi12:17:131:42:358:1526:06
8:24
#17723
Half
13.11 mi12:23:401:49:028:196:27
9:27
#18079
25K
15.53 mi12:44:132:09:358:2120:33
8:29
#17876
30K
18.64 mi13:15:142:40:368:3731:01
9:59
#18846
20M
20.00 mi13:27:422:53:048:3912:28
9:10
#18748
21M
21.00 mi13:37:203:02:428:429:38
9:38
#18619
35K
21.75 mi13:44:193:09:418:436:59
9:20
#18671
23M
23.00 mi13:57:053:22:278:4812:46
10:12
#18886
24M
24.00 mi14:07:353:32:578:5210:30
10:30
#19157
40K
24.85 mi14:17:303:42:528:589:55
11:36
#19499
25.2M
25.20 mi14:20:583:46:208:593:28
10:03
#19460
Finish
26.22 mi14:29:413:55:038:588:43
8:33
#19346
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi163805382538217787(Top 63%)6197(Top 51%)6197(Top 113%)
10K6.21 mi3.10 mi17850-14706241-8596241-85919133(Top 67%)6964(Top 57%)6964(Top 127%)
15K9.32 mi3.11 mi17794+566205+366205+3617787(Top 63%)6197(Top 51%)6197(Top 113%)
20K12.43 mi3.11 mi17723+716173+326173+3217575(Top 62%)6097(Top 50%)6097(Top 111%)
Half13.11 mi0.68 mi18079-3566386-2136386-21323425(Top 82%)9377(Top 77%)9377(Top 171%)
25K15.53 mi2.42 mi17876+2036284+1026284+10217055(Top 60%)5890(Top 48%)5890(Top 108%)
30K18.64 mi3.11 mi18846-9706857-5736857-57321558(Top 76%)8527(Top 70%)8527(Top 156%)
20M20.00 mi1.36 mi18748+986831+266831+2617684(Top 62%)6528(Top 53%)6528(Top 119%)
21M21.00 mi1.00 mi18619+1296785+466785+4616738(Top 59%)6120(Top 50%)6120(Top 112%)
35K21.75 mi0.75 mi18671-526835-506835-5019726(Top 69%)7834(Top 64%)7834(Top 143%)
23M23.00 mi1.25 mi18886-2156986-1516986-15121109(Top 74%)8608(Top 70%)8608(Top 157%)
24M24.00 mi1.00 mi19157-2717159-1737159-17322821(Top 80%)9548(Top 78%)9548(Top 175%)
40K24.85 mi0.85 mi19499-3427379-2207379-22024302(Top 86%)10322(Top 84%)10322(Top 189%)
25.2M25.20 mi0.35 mi19460+397364+157364+1517326(Top 61%)6776(Top 55%)6776(Top 124%)
Finish26.22 mi1.02 mi19346+1147324+407324+4016613(Top 58%)6371(Top 52%)6371(Top 116%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

17787

Females

6197

F18-39

6197

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

19133

Females

6964

F18-39

6964

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

17787

Females

6197

F18-39

6197

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

17575

Females

6097

F18-39

6097

20K→Half

12.4 - 13.1 mi

Top 82%
×2stories
+19ft-37ft

Overall

23425

Females

9377

F18-39

9377

Half→25K

13.1 - 15.5 mi

Top 60%
×4stories
+66ft-88ft

Overall

17055

Females

5890

F18-39

5890

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

21558

Females

8527

F18-39

8527

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

17684

Females

6528

F18-39

6528

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

16738

Females

6120

F18-39

6120

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

19726

Females

7834

F18-39

7834

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

21109

Females

8608

F18-39

8608

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

22821

Females

9548

F18-39

9548

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24302

Females

10322

F18-39

10322

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17326

Females

6776

F18-39

6776

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

16613

Females

6371

F18-39

6371

Passing Analysis

Category:
Athletes Passed
1412
Passed By
4378
Net Change
-2966
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16380
5K → 10K251495-1470#16380#17850
10K → 15K218162+56#17850#17794
15K → 20K220149+71#17794#17723
20K → Half6362-356#17723#18079
Half → 25K26360+203#18079#17876
25K → 30K581028-970#17876#18846
30K → 20M14749+98#18846#18748
20M → 21M17344+129#18748#18619
21M → 35K3789-52#18619#18671
35K → 23M56271-215#18671#18886
23M → 24M14285-271#18886#19157
24M → 40K18360-342#19157#19499
40K → 25.2M478+39#19499#19460
25.2M → Finish13016+114#19460#19346
TOTALS14124378-2966
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing