Boston Marathon logo
BOSTON MARATHON 2025

Peng Shao

Bib: 4082•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 46%
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:33
Rank: #4735
Start → 5K
20:33 | 6:37/mi
10K· 6.21 mi
41:33
Rank: #5250 (-515)
5K → 10K
21:00 | 6:46/mi
15K· 9.32 mi
1:03:27
Rank: #6280 (-1030)
10K → 15K
21:54 | 7:03/mi
20K· 12.43 mi
1:26:30
Rank: #7244 (-964)
15K → 20K
23:03 | 7:25/mi
Half· 13.11 mi
1:31:27
Rank: #7330 (-86)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:50:09
Rank: #7864 (-534)
Half → 25K
18:42 | 7:43/mi
30K· 18.64 mi
2:15:53
Rank: #8745 (-881)
25K → 30K
25:44 | 8:17/mi
20M
2:27:55
Rank: #9343 (-598)
30K → 20M
12:02 | 8:51/mi
21M
2:37:54
Rank: #9983 (-640)
20M → 21M
9:59 | 9:59/mi
35K· 21.75 mi
2:44:33
Rank: #10335 (-352)
21M → 35K
6:39 | 8:53/mi
23M
2:57:02
Rank: #11103 (-768)
35K → 23M
12:29 | 9:58/mi
24M
3:07:35
Rank: #11976 (-873)
23M → 24M
10:33 | 10:33/mi
40K· 24.85 mi
3:16:45
Rank: #12628 (-652)
24M → 40K
9:10 | 10:43/mi
25.2M
3:20:28
Rank: #12794 (-166)
40K → 25.2M
3:43 | 10:47/mi
Finish· 26.22 mi
3:29:36
Rank: #13111 (-317)
25.2M → Finish
9:08 | 8:58/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
Time1:31:27
Pace6:59 /mi
2nd Half
Distance13.11 mi
Time1:58:09
Pace9:01 /mi
📊Positive Split: 29.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0420:336:3720:33
6:37
-
10K
6.21 mi10:44:0441:336:4121:00
6:46
+0:09
15K
9.32 mi11:05:581:03:276:4821:54
7:03
+0:17
20K
12.43 mi11:29:011:26:306:5823:03
7:25
+0:22
Half
13.11 mi11:33:581:31:276:594:57
7:15
-0:10
25K
15.53 mi11:52:401:50:097:0518:42
7:43
+0:28
30K
18.64 mi12:18:242:15:537:1725:44
8:17
+0:34
20M
20.00 mi12:30:262:27:557:2412:02
8:51
+0:34
21M
21.00 mi12:40:252:37:547:319:59
9:59
+1:08
35K
21.75 mi12:47:042:44:337:346:39
8:53
-1:06
23M
23.00 mi12:59:332:57:027:4212:29
9:58
+1:05
24M
24.00 mi13:10:063:07:357:4910:33
10:33
+0:35
40K
24.85 mi13:19:163:16:457:559:10
10:43
+0:10
25.2M
25.20 mi13:22:593:20:287:573:43
10:47
+0:04
Finish
26.22 mi13:32:073:29:368:009:08
8:58
-1:49

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

6:37 /mi

Average Pace

8:00 /mi

Slowest Pace

10:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:09

53% of race

Time at Steady Pace

53:33

26% of race

Time at Slower Pace

45:54

22% of race

Average Pace: 8:00 /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 mi10:23:0420:336:3720:33
6:37
#4735
10K
6.21 mi10:44:0441:336:4121:00
6:46
#5250
15K
9.32 mi11:05:581:03:276:4821:54
7:03
#6280
20K
12.43 mi11:29:011:26:306:5823:03
7:25
#7244
Half
13.11 mi11:33:581:31:276:594:57
7:15
#7330
25K
15.53 mi11:52:401:50:097:0518:42
7:43
#7864
30K
18.64 mi12:18:242:15:537:1725:44
8:17
#8745
20M
20.00 mi12:30:262:27:557:2412:02
8:51
#9343
21M
21.00 mi12:40:252:37:547:319:59
9:59
#9983
35K
21.75 mi12:47:042:44:337:346:39
8:53
#10335
23M
23.00 mi12:59:332:57:027:4212:29
9:58
#11103
24M
24.00 mi13:10:063:07:357:4910:33
10:33
#11976
40K
24.85 mi13:19:163:16:457:559:10
10:43
#12628
25.2M
25.20 mi13:22:593:20:287:573:43
10:47
#12794
Finish
26.22 mi13:32:073:29:368:009:08
8:58
#13111
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4735444344437953(Top 28%)6920(Top 43%)6920(Top 123%)
10K6.21 mi3.10 mi5250-5154881-4384881-4385973(Top 21%)5467(Top 34%)5467(Top 97%)
15K9.32 mi3.11 mi6280-10305734-8535734-8537953(Top 28%)6920(Top 43%)6920(Top 123%)
20K12.43 mi3.11 mi7244-9646450-7166450-71610057(Top 35%)8047(Top 50%)8047(Top 143%)
Half13.11 mi0.68 mi7330-866508-586508-589601(Top 34%)7836(Top 49%)7836(Top 139%)
25K15.53 mi2.42 mi7864-5346848-3406848-34011638(Top 41%)8683(Top 54%)8683(Top 154%)
30K18.64 mi3.11 mi8745-8817331-4837331-48313365(Top 47%)9292(Top 58%)9292(Top 165%)
20M20.00 mi1.36 mi9343-5987629-2987629-29815947(Top 56%)10340(Top 64%)10340(Top 183%)
21M21.00 mi1.00 mi9983-6407938-3097938-30918210(Top 64%)11251(Top 70%)11251(Top 199%)
35K21.75 mi0.75 mi10335-3528077-1398077-13917663(Top 62%)10889(Top 68%)10889(Top 193%)
23M23.00 mi1.25 mi11103-7688409-3328409-33220370(Top 72%)12085(Top 75%)12085(Top 214%)
24M24.00 mi1.00 mi11976-8738790-3818790-38122941(Top 81%)13273(Top 82%)13273(Top 235%)
40K24.85 mi0.85 mi12628-6529076-2869076-28622481(Top 79%)12968(Top 81%)12968(Top 230%)
25.2M25.20 mi0.35 mi12794-1669133-579133-5719908(Top 70%)11730(Top 73%)11730(Top 208%)
Finish26.22 mi1.02 mi13111-3179252-1199252-11918819(Top 66%)11268(Top 70%)11268(Top 200%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

7953

Males

6920

M18-39

6920

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5973

Males

5467

M18-39

5467

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

7953

Males

6920

M18-39

6920

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

10057

Males

8047

M18-39

8047

20K→Half

12.4 - 13.1 mi

Top 34%
×2stories
+19ft-37ft

Overall

9601

Males

7836

M18-39

7836

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

11638

Males

8683

M18-39

8683

25K→30K

15.5 - 18.6 mi

Top 47%
×9stories
+181ft-148ft

Overall

13365

Males

9292

M18-39

9292

30K→20M

18.6 - 20.0 mi

Top 56%
×5stories
+64ft-50ft

Overall

15947

Males

10340

M18-39

10340

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

18210

Males

11251

M18-39

11251

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

17663

Males

10889

M18-39

10889

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

20370

Males

12085

M18-39

12085

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

22941

Males

13273

M18-39

13273

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22481

Males

12968

M18-39

12968

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19908

Males

11730

M18-39

11730

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

18819

Males

11268

M18-39

11268

Passing Analysis

Category:
Athletes Passed
261
Passed By
8634
Net Change
-8376
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4735
5K → 10K44559-515#4735#5250
10K → 15K141044-1030#5250#6280
15K → 20K15979-964#6280#7244
20K → Half591-86#7244#7330
Half → 25K25559-534#7330#7864
25K → 30K57938-881#7864#8745
30K → 20M20618-598#8745#9343
20M → 21M13652-640#9343#9983
21M → 35K13363-352#9983#10335
35K → 23M12780-768#10335#11103
23M → 24M10883-873#11103#11976
24M → 40K8660-652#11976#12628
40K → 25.2M7173-166#12628#12794
25.2M → Finish18335-317#12794#13111
TOTALS2618634-8376
📊

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