Boston Marathon logo
BOSTON MARATHON 2025

Weichu Su

Bib: 11608•F

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 40%
Gender (Female)
#0 / 12228
Top 24%
Division (F18-39)
#0 / 5469
Top 40%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:55
Rank: #8272
Start → 5K
7:03/mi
21:55 split
10K· 6.21 mi
44:03
Rank: #8571 (-299)
5K → 10K
7:07/mi
22:08 split
15K· 9.32 mi
1:06:51
Rank: #9094 (-523)
10K → 15K
7:20/mi
22:48 split
20K· 12.43 mi
1:31:02
Rank: #10092 (-998)
15K → 20K
7:47/mi
24:11 split
Half· 13.11 mi
1:36:09
Rank: #10179 (-87)
20K → Half
7:30/mi
5:07 split
25K· 15.53 mi
1:55:19
Rank: #10647 (-468)
Half → 25K
7:54/mi
19:10 split
30K· 18.64 mi
2:21:14
Rank: #11253 (-606)
25K → 30K
8:21/mi
25:55 split
20M
2:32:42
Rank: #11364 (-111)
30K → 20M
8:26/mi
11:28 split
21M
2:41:28
Rank: #11365 (-1)
20M → 21M
8:46/mi
8:46 split
35K· 21.75 mi
2:47:12
Rank: #11303 (+62)
21M → 35K
7:40/mi
5:44 split
23M
2:57:40
Rank: #11342 (-39)
35K → 23M
8:22/mi
10:28 split
24M
3:05:50
Rank: #11349 (-7)
23M → 24M
8:10/mi
8:10 split
40K· 24.85 mi
3:12:52
Rank: #11344 (+5)
24M → 40K
8:14/mi
7:02 split
25.2M
3:15:57
Rank: #11338 (+6)
40K → 25.2M
8:56/mi
3:05 split
Finish· 26.22 mi
3:23:49
Rank: #11287 (+51)
25.2M → Finish
7:43/mi
7:52 split

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
Time1:36:09
Pace7:20 /mi
2nd Half
Distance13.11 mi
Time1:47:40
Pace8:13 /mi
📊Positive Split: 12.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4921:557:0321:55
7:03
-
10K
6.21 mi11:11:5744:037:0522:08
7:07
+0:04
15K
9.32 mi11:34:451:06:517:1022:48
7:20
+0:13
20K
12.43 mi11:58:561:31:027:2024:11
7:47
+0:27
Half
13.11 mi12:04:031:36:097:205:07
7:30
-0:17
25K
15.53 mi12:23:131:55:197:2519:10
7:54
+0:24
30K
18.64 mi12:49:082:21:147:3525:55
8:21
+0:27
20M
20.00 mi13:00:362:32:427:3811:28
8:26
+0:05
21M
21.00 mi13:09:222:41:287:418:46
8:46
+0:20
35K
21.75 mi13:15:062:47:127:415:44
7:40
-1:06
23M
23.00 mi13:25:342:57:407:4310:28
8:22
+0:42
24M
24.00 mi13:33:443:05:507:458:10
8:10
-0:12
40K
24.85 mi13:40:463:12:527:467:02
8:14
+0:04
25.2M
25.20 mi13:43:513:15:577:473:05
8:56
+0:42
Finish
26.22 mi13:51:433:23:497:477:52
7:43
-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

7:03 /mi

Average Pace

7:47 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:11:58

35% of race

Time at Steady Pace

1:05:07

32% of race

Time at Slower Pace

1:06:44

33% of race

Average Pace: 7:46 /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 mi10:49:4921:557:0321:55
7:03
#8272
10K
6.21 mi11:11:5744:037:0522:08
7:07
#8571
15K
9.32 mi11:34:451:06:517:1022:48
7:20
#9094
20K
12.43 mi11:58:561:31:027:2024:11
7:47
#10092
Half
13.11 mi12:04:031:36:097:205:07
7:30
#10179
25K
15.53 mi12:23:131:55:197:2519:10
7:54
#10647
30K
18.64 mi12:49:082:21:147:3525:55
8:21
#11253
20M
20.00 mi13:00:362:32:427:3811:28
8:26
#11364
21M
21.00 mi13:09:222:41:287:418:46
8:46
#11365
35K
21.75 mi13:15:062:47:127:415:44
7:40
#11303
23M
23.00 mi13:25:342:57:407:4310:28
8:22
#11342
24M
24.00 mi13:33:443:05:507:458:10
8:10
#11349
40K
24.85 mi13:40:463:12:527:467:02
8:14
#11344
25.2M
25.20 mi13:43:513:15:577:473:05
8:56
#11338
Finish
26.22 mi13:51:433:23:497:477:52
7:43
#11287
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi82721089108910334(Top 36%)2045(Top 17%)2045(Top 37%)
10K6.21 mi3.10 mi8571-2991217-1281217-1288889(Top 31%)1337(Top 11%)1337(Top 24%)
15K9.32 mi3.11 mi9094-5231436-2191436-21910334(Top 36%)2045(Top 17%)2045(Top 37%)
20K12.43 mi3.11 mi10092-9981908-4721908-47213142(Top 46%)3617(Top 30%)3617(Top 66%)
Half13.11 mi0.68 mi10179-871955-471955-4711771(Top 41%)2810(Top 23%)2810(Top 51%)
25K15.53 mi2.42 mi10647-4682203-2482203-24813130(Top 46%)3732(Top 31%)3732(Top 68%)
30K18.64 mi3.11 mi11253-6062596-3932596-39313758(Top 48%)4230(Top 35%)4230(Top 77%)
20M20.00 mi1.36 mi11364-1112704-1082704-10813395(Top 47%)4181(Top 34%)4181(Top 76%)
21M21.00 mi1.00 mi11365-12742-382742-3812105(Top 43%)3650(Top 30%)3650(Top 67%)
35K21.75 mi0.75 mi11303+622738+42738+49844(Top 35%)2536(Top 21%)2536(Top 46%)
23M23.00 mi1.25 mi11342-392802-642802-6412430(Top 44%)3960(Top 32%)3960(Top 72%)
24M24.00 mi1.00 mi11349-72837-352837-3512363(Top 44%)3969(Top 32%)3969(Top 73%)
40K24.85 mi0.85 mi11344+52873-362873-3611729(Top 41%)3764(Top 31%)3764(Top 69%)
25.2M25.20 mi0.35 mi11338+62893-202893-2011505(Top 41%)3742(Top 31%)3742(Top 68%)
Finish26.22 mi1.02 mi11287+512901-82901-810873(Top 38%)3394(Top 28%)3394(Top 62%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

10334

Females

2045

F18-39

2045

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8889

Females

1337

F18-39

1337

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

10334

Females

2045

F18-39

2045

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

13142

Females

3617

F18-39

3617

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11771

Females

2810

F18-39

2810

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

13130

Females

3732

F18-39

3732

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13758

Females

4230

F18-39

4230

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

13395

Females

4181

F18-39

4181

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12105

Females

3650

F18-39

3650

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9844

Females

2536

F18-39

2536

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

12430

Females

3960

F18-39

3960

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

12363

Females

3969

F18-39

3969

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11729

Females

3764

F18-39

3764

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11505

Females

3742

F18-39

3742

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10873

Females

3394

F18-39

3394

Passing Analysis

Category:
Athletes Passed
1015
Passed By
4028
Net Change
-3015
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8272
5K → 10K101400-299#8272#8571
10K → 15K51574-523#8571#9094
15K → 20K311027-998#9094#10092
20K → Half1097-87#10092#10179
Half → 25K70538-468#10179#10647
25K → 30K93699-606#10647#11253
30K → 20M87198-111#11253#11364
20M → 21M8990-1#11364#11365
21M → 35K8927+62#11365#11303
35K → 23M97136-39#11303#11342
23M → 24M8087-7#11342#11349
24M → 40K7671+5#11349#11344
40K → 25.2M4438+6#11344#11338
25.2M → Finish9746+51#11338#11287
TOTALS10154028-3015
📊

Passing Visuals

Category:
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