Boston Marathon logo
BOSTON MARATHON 2025

Nasreen Wong

Bib: 24635•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Top 40%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:08
Rank: #19391
Start → 5K
26:08 | 8:25/mi
10K· 6.21 mi
52:39
Rank: #19673 (-282)
5K → 10K
26:31 | 8:32/mi
15K· 9.32 mi
1:19:40
Rank: #19972 (-299)
10K → 15K
27:01 | 8:42/mi
20K· 12.43 mi
1:47:34
Rank: #20162 (-190)
15K → 20K
27:54 | 8:59/mi
Half· 13.11 mi
1:53:40
Rank: #20245 (-83)
20K → Half
6:06 | 8:56/mi
25K· 15.53 mi
2:15:30
Rank: #20195 (+50)
Half → 25K
21:50 | 9:00/mi
30K· 18.64 mi
2:45:05
Rank: #20170 (+25)
25K → 30K
29:35 | 9:31/mi
20M
2:58:06
Rank: #20109 (+61)
30K → 20M
13:01 | 9:35/mi
21M
3:08:26
Rank: #20052 (+57)
20M → 21M
10:20 | 10:20/mi
35K· 21.75 mi
3:15:12
Rank: #19995 (+57)
21M → 35K
6:46 | 9:03/mi
23M
3:26:53
Rank: #19886 (+109)
35K → 23M
11:41 | 9:20/mi
24M
3:36:07
Rank: #19832 (+54)
23M → 24M
9:14 | 9:14/mi
40K· 24.85 mi
3:44:03
Rank: #19750 (+82)
24M → 40K
7:56 | 9:17/mi
25.2M
3:47:33
Rank: #19719 (+31)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
3:57:02
Rank: #19748 (-29)
25.2M → Finish
9:29 | 9:18/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
Time1:53:40
Pace8:40 /mi
2nd Half
Distance13.11 mi
Time2:03:22
Pace9:25 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0926:088:2526:08
8:25
-
10K
6.21 mi11:44:4052:398:2826:31
8:32
+0:07
15K
9.32 mi12:11:411:19:408:3327:01
8:42
+0:10
20K
12.43 mi12:39:351:47:348:3927:54
8:59
+0:17
Half
13.11 mi12:45:411:53:408:406:06
8:56
-0:03
25K
15.53 mi13:07:312:15:308:4321:50
9:00
+0:04
30K
18.64 mi13:37:062:45:058:5129:35
9:31
+0:31
20M
20.00 mi13:50:072:58:068:5413:01
9:35
+0:04
21M
21.00 mi14:00:273:08:268:5810:20
10:20
+0:45
35K
21.75 mi14:07:133:15:128:596:46
9:03
-1:17
23M
23.00 mi14:18:543:26:539:0011:41
9:20
+0:17
24M
24.00 mi14:28:083:36:079:009:14
9:14
-0:06
40K
24.85 mi14:36:043:44:039:017:56
9:17
+0:03
25.2M
25.20 mi14:39:343:47:339:023:30
10:09
+0:52
Finish
26.22 mi14:49:033:57:029:039:29
9:18
-0:51

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

8:25 /mi

Average Pace

9:03 /mi

Slowest Pace

10:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:46

36% of race

Time at Steady Pace

1:34:50

40% of race

Time at Slower Pace

56:26

24% 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 mi11:18:0926:088:2526:08
8:25
#19391
10K
6.21 mi11:44:4052:398:2826:31
8:32
#19673
15K
9.32 mi12:11:411:19:408:3327:01
8:42
#19972
20K
12.43 mi12:39:351:47:348:3927:54
8:59
#20162
Half
13.11 mi12:45:411:53:408:406:06
8:56
#20245
25K
15.53 mi13:07:312:15:308:4321:50
9:00
#20195
30K
18.64 mi13:37:062:45:058:5129:35
9:31
#20170
20M
20.00 mi13:50:072:58:068:5413:01
9:35
#20109
21M
21.00 mi14:00:273:08:268:5810:20
10:20
#20052
35K
21.75 mi14:07:133:15:128:596:46
9:03
#19995
23M
23.00 mi14:18:543:26:539:0011:41
9:20
#19886
24M
24.00 mi14:28:083:36:079:009:14
9:14
#19832
40K
24.85 mi14:36:043:44:039:017:56
9:17
#19750
25.2M
25.20 mi14:39:343:47:339:023:30
10:09
#19719
Finish
26.22 mi14:49:033:57:029:039:29
9:18
#19748
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi193917138713820471(Top 72%)7692(Top 63%)7692(Top 774%)
10K6.21 mi3.10 mi19673-2827286-1487286-14820012(Top 70%)7472(Top 61%)7472(Top 752%)
15K9.32 mi3.11 mi19972-2997448-1627448-16220471(Top 72%)7692(Top 63%)7692(Top 774%)
20K12.43 mi3.11 mi20162-1907566-1187566-11820864(Top 73%)7979(Top 65%)7979(Top 803%)
Half13.11 mi0.68 mi20245-837624-587624-5821574(Top 76%)8343(Top 68%)8343(Top 839%)
25K15.53 mi2.42 mi20195+507603+217603+2119933(Top 70%)7498(Top 61%)7498(Top 754%)
30K18.64 mi3.11 mi20170+257622-197622-1920033(Top 71%)7678(Top 63%)7678(Top 772%)
20M20.00 mi1.36 mi20109+617612+107612+1019537(Top 69%)7546(Top 62%)7546(Top 759%)
21M21.00 mi1.00 mi20052+577602+107602+1019503(Top 69%)7620(Top 62%)7620(Top 767%)
35K21.75 mi0.75 mi19995+577588+147588+1418496(Top 65%)7196(Top 59%)7196(Top 724%)
23M23.00 mi1.25 mi19886+1097559+297559+2917953(Top 63%)6968(Top 57%)6968(Top 701%)
24M24.00 mi1.00 mi19832+547553+67553+618530(Top 65%)7314(Top 60%)7314(Top 736%)
40K24.85 mi0.85 mi19750+827522+317522+3117788(Top 63%)7030(Top 57%)7030(Top 707%)
25.2M25.20 mi0.35 mi19719+317514+87514+817755(Top 63%)7007(Top 57%)7007(Top 705%)
Finish26.22 mi1.02 mi19748-297542-287542-2820415(Top 72%)8347(Top 68%)8347(Top 840%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

20471

Females

7692

F55-59

7692

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

20012

Females

7472

F55-59

7472

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

20471

Females

7692

F55-59

7692

15K→20K

9.3 - 12.4 mi

Top 73%
×5stories
+106ft-86ft

Overall

20864

Females

7979

F55-59

7979

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

21574

Females

8343

F55-59

8343

Half→25K

13.1 - 15.5 mi

Top 70%
×4stories
+66ft-88ft

Overall

19933

Females

7498

F55-59

7498

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

20033

Females

7678

F55-59

7678

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

19537

Females

7546

F55-59

7546

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

19503

Females

7620

F55-59

7620

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

18496

Females

7196

F55-59

7196

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

17953

Females

6968

F55-59

6968

23M→24M

23.0 - 24.0 mi

Top 65%
×6stories
+12ft-82ft

Overall

18530

Females

7314

F55-59

7314

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17788

Females

7030

F55-59

7030

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17755

Females

7007

F55-59

7007

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2stories
+22ft-21ft

Overall

20415

Females

8347

F55-59

8347

Passing Analysis

Category:
Athletes Passed
1566
Passed By
1923
Net Change
-357
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19391
5K → 10K145427-282#19391#19673
10K → 15K114413-299#19673#19972
15K → 20K121311-190#19972#20162
20K → Half1194-83#20162#20245
Half → 25K184134+50#20245#20195
25K → 30K240215+25#20195#20170
30K → 20M12463+61#20170#20109
20M → 21M11962+57#20109#20052
21M → 35K8225+57#20052#19995
35K → 23M14233+109#19995#19886
23M → 24M9440+54#19886#19832
24M → 40K10018+82#19832#19750
40K → 25.2M4413+31#19750#19719
25.2M → Finish4675-29#19719#19748
TOTALS15661923-357
📊

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