Boston Marathon logo
BOSTON MARATHON 2025

Lexin Ma

Bib: 19320•F

IA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 39%
Gender (Female)
#0 / 12228
Top 23%
Masters (Masters Women)
#0 / 6759
Top 9%
Division (F40-44)
#0 / 1718
Top 20%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:15
Rank: #12102
Start → 5K
23:15 | 7:29/mi
10K· 6.21 mi
45:58
Rank: #11225 (+877)
5K → 10K
22:43 | 7:19/mi
15K· 9.32 mi
1:09:09
Rank: #11245 (-20)
10K → 15K
23:11 | 7:28/mi
20K· 12.43 mi
1:32:41
Rank: #11298 (-53)
15K → 20K
23:32 | 7:34/mi
Half· 13.11 mi
1:37:42
Rank: #11246 (+52)
20K → Half
5:01 | 7:21/mi
25K· 15.53 mi
1:56:09
Rank: #11152 (+94)
Half → 25K
18:27 | 7:37/mi
30K· 18.64 mi
2:20:58
Rank: #11139 (+13)
25K → 30K
24:49 | 7:59/mi
20M
2:32:12
Rank: #11170 (-31)
30K → 20M
11:14 | 8:16/mi
21M
2:41:28
Rank: #11364 (-194)
20M → 21M
9:16 | 9:16/mi
35K· 21.75 mi
2:47:05
Rank: #11263 (+101)
21M → 35K
5:37 | 7:30/mi
23M
2:57:09
Rank: #11152 (+111)
35K → 23M
10:04 | 8:02/mi
24M
3:05:16
Rank: #11162 (-10)
23M → 24M
8:07 | 8:07/mi
40K· 24.85 mi
3:11:55
Rank: #11035 (+127)
24M → 40K
6:39 | 7:47/mi
25.2M
3:15:02
Rank: #11032 (+3)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:23:00
Rank: #11033 (-1)
25.2M → Finish
7:58 | 7:49/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
Time1:37:42
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:45:18
Pace8:02 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1023:157:2923:15
7:29
-
10K
6.21 mi11:39:5345:587:2422:43
7:19
-0:10
15K
9.32 mi12:03:041:09:097:2523:11
7:28
+0:09
20K
12.43 mi12:26:361:32:417:2723:32
7:34
+0:06
Half
13.11 mi12:31:371:37:427:275:01
7:21
-0:13
25K
15.53 mi12:50:041:56:097:2918:27
7:37
+0:16
30K
18.64 mi13:14:532:20:587:3424:49
7:59
+0:22
20M
20.00 mi13:26:072:32:127:3711:14
8:16
+0:17
21M
21.00 mi13:35:232:41:287:419:16
9:16
+1:00
35K
21.75 mi13:41:002:47:057:415:37
7:30
-1:46
23M
23.00 mi13:51:042:57:097:4210:04
8:02
+0:32
24M
24.00 mi13:59:113:05:167:438:07
8:07
+0:05
40K
24.85 mi14:05:503:11:557:436:39
7:47
-0:20
25.2M
25.20 mi14:08:573:15:027:443:07
9:02
+1:15
Finish
26.22 mi14:16:553:23:007:457:58
7:49
-1:13

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

7:19 /mi

Average Pace

7:45 /mi

Slowest Pace

9:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:47

39% of race

Time at Steady Pace

1:31:29

45% of race

Time at Slower Pace

31:44

16% of race

Average Pace: 7:45 /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 mi11:17:1023:157:2923:15
7:29
#12102
10K
6.21 mi11:39:5345:587:2422:43
7:19
#11225
15K
9.32 mi12:03:041:09:097:2523:11
7:28
#11245
20K
12.43 mi12:26:361:32:417:2723:32
7:34
#11298
Half
13.11 mi12:31:371:37:427:275:01
7:21
#11246
25K
15.53 mi12:50:041:56:097:2918:27
7:37
#11152
30K
18.64 mi13:14:532:20:587:3424:49
7:59
#11139
20M
20.00 mi13:26:072:32:127:3711:14
8:16
#11170
21M
21.00 mi13:35:232:41:287:419:16
9:16
#11364
35K
21.75 mi13:41:002:47:057:415:37
7:30
#11263
23M
23.00 mi13:51:042:57:097:4210:04
8:02
#11152
24M
24.00 mi13:59:113:05:167:438:07
8:07
#11162
40K
24.85 mi14:05:503:11:557:436:39
7:47
#11035
25.2M
25.20 mi14:08:573:15:027:443:07
9:02
#11032
Finish
26.22 mi14:16:553:23:007:457:58
7:49
#11033
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi121022851285111457(Top 40%)2611(Top 21%)2611(Top 152%)
10K6.21 mi3.10 mi11225+8772412+4392412+43910458(Top 37%)2041(Top 17%)2041(Top 119%)
15K9.32 mi3.11 mi11245-202443-312443-3111457(Top 40%)2611(Top 21%)2611(Top 152%)
20K12.43 mi3.11 mi11298-532502-592502-5911400(Top 40%)2685(Top 22%)2685(Top 156%)
Half13.11 mi0.68 mi11246+522471+312471+3110561(Top 37%)2226(Top 18%)2226(Top 130%)
25K15.53 mi2.42 mi11152+942469+22469+210873(Top 38%)2521(Top 21%)2521(Top 147%)
30K18.64 mi3.11 mi11139+132538-692538-6911295(Top 40%)2927(Top 24%)2927(Top 170%)
20M20.00 mi1.36 mi11170-312594-562594-5612276(Top 43%)3576(Top 29%)3576(Top 208%)
21M21.00 mi1.00 mi11364-1942741-1472741-14714967(Top 53%)5150(Top 42%)5150(Top 300%)
35K21.75 mi0.75 mi11263+1012715+262715+268746(Top 31%)2025(Top 17%)2025(Top 118%)
23M23.00 mi1.25 mi11152+1112693+222693+2210354(Top 36%)2912(Top 24%)2912(Top 169%)
24M24.00 mi1.00 mi11162-102740-472740-4712035(Top 42%)3814(Top 31%)3814(Top 222%)
40K24.85 mi0.85 mi11035+1272712+282712+288651(Top 30%)2303(Top 19%)2303(Top 134%)
25.2M25.20 mi0.35 mi11032+32727-152727-1512040(Top 42%)3981(Top 33%)3981(Top 232%)
Finish26.22 mi1.02 mi11033-12760-332760-3311579(Top 41%)3732(Top 31%)3732(Top 217%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

11457

Females

2611

F40-44

2611

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

10458

Females

2041

F40-44

2041

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

11457

Females

2611

F40-44

2611

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

11400

Females

2685

F40-44

2685

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

10561

Females

2226

F40-44

2226

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10873

Females

2521

F40-44

2521

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

11295

Females

2927

F40-44

2927

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

12276

Females

3576

F40-44

3576

20M→21M

20.0 - 21.0 mi

Top 53%
×8stories
+106ft-24ft

Overall

14967

Females

5150

F40-44

5150

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8746

Females

2025

F40-44

2025

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

10354

Females

2912

F40-44

2912

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

12035

Females

3814

F40-44

3814

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8651

Females

2303

F40-44

2303

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

12040

Females

3981

F40-44

3981

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

11579

Females

3732

F40-44

3732

Passing Analysis

Category:
Athletes Passed
2522
Passed By
1453
Net Change
+1069
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12102
5K → 10K91437+877#12102#11225
10K → 15K188208-20#11225#11245
15K → 20K157210-53#11245#11298
20K → Half6210+52#11298#11246
Half → 25K204110+94#11246#11152
25K → 30K238225+13#11152#11139
30K → 20M100131-31#11139#11170
20M → 21M45239-194#11170#11364
21M → 35K11413+101#11364#11263
35K → 23M16150+111#11263#11152
23M → 24M8494-10#11152#11162
24M → 40K14922+127#11162#11035
40K → 25.2M3734+3#11035#11032
25.2M → Finish6970-1#11032#11033
TOTALS25221453+1069
📊

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