Boston Marathon logo
BOSTON MARATHON 2025

Xiaoyang Zhang

Bib: 16246•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:21/mi
25:55
↑ 97↓ 3451.5%
10K· 6.21 mi
8:13/mi
51:28
↑ 79↓ 1380.4%
15K· 9.32 mi
8:38/mi
1:18:16
↑ 67↓ 78
20K· 12.43 mi
8:53/mi
1:45:53
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:51:39
↑ 19↓ 370.5%
25K· 15.53 mi
8:45/mi
2:12:53
↑ 66↓ 880.2%
30K· 18.64 mi
8:54/mi
2:40:33
↑ 181↓ 1480.2%
20M
8:33/mi
2:52:10
↑ 64↓ 500.2%
21M
8:50/mi
3:01:00
↑ 106↓ 241.6%
35K· 21.75 mi
7:38/mi
3:06:43
↑ 17↓ 861.7%
23M
7:50/mi
3:16:32
↑ 23↓ 630.6%
24M
7:57/mi
3:24:29
↓ 821.3%
40K· 24.85 mi
7:21/mi
3:30:46
↓ 200.3%
25.2M
8:13/mi
3:33:36
↑ 13↓ 160.2%
Finish· 26.22 mi
7:15/mi
3:40:59
↑ 22↓ 21

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 Half
Distance13.11 mi
Time1:51:39
Pace8:31 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:49:20
Pace8:20 /mi
📊Negative Split: 2.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:4825:558:2125:55
8:21
-
10K
6.21 mi11:48:2151:288:1725:33
8:13
-0:08
15K
9.32 mi12:15:091:18:168:2426:48
8:38
+0:25
20K
12.43 mi12:42:461:45:538:3127:37
8:53
+0:15
Half
13.11 mi12:48:321:51:398:315:46
8:27
-0:26
25K
15.53 mi13:09:462:12:538:3321:14
8:45
+0:18
30K
18.64 mi13:37:262:40:338:3727:40
8:54
+0:09
20M
20.00 mi13:49:032:52:108:3611:37
8:33
-0:21
21M
21.00 mi13:57:533:01:008:378:50
8:50
+0:17
35K
21.75 mi14:03:363:06:438:355:43
7:38
-1:12
23M
23.00 mi14:13:253:16:328:339:49
7:50
+0:12
24M
24.00 mi14:21:223:24:298:317:57
7:57
+0:07
40K
24.85 mi14:27:393:30:468:296:17
7:21
-0:36
25.2M
25.20 mi14:30:293:33:368:292:50
8:13
+0:52
Finish
26.22 mi14:37:523:40:598:267:23
7:15
-0:58

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

7:15 /mi

Average Pace

8:26 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

37:09

17% of race

Time at Steady Pace

1:11:41

32% of race

Time at Slower Pace

1:52:09

51% of race

Average Pace: 8:26 /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 mi11:22:4825:558:2125:55
8:21
#18964
10K
6.21 mi11:48:2151:288:1725:33
8:13
#18495
15K
9.32 mi12:15:091:18:168:2426:48
8:38
#19001
20K
12.43 mi12:42:461:45:538:3127:37
8:53
#19382
Half
13.11 mi12:48:321:51:398:315:46
8:27
#19367
25K
15.53 mi13:09:462:12:538:3321:14
8:45
#19219
30K
18.64 mi13:37:262:40:338:3727:40
8:54
#18823
20M
20.00 mi13:49:032:52:108:3611:37
8:33
#18480
21M
21.00 mi13:57:533:01:008:378:50
8:50
#18126
35K
21.75 mi14:03:363:06:438:355:43
7:38
#17825
23M
23.00 mi14:13:253:16:328:339:49
7:50
#17311
24M
24.00 mi14:21:223:24:298:317:57
7:57
#17027
40K
24.85 mi14:27:393:30:468:296:17
7:21
#16606
25.2M
25.20 mi14:30:293:33:368:292:50
8:13
#16456
Finish
26.22 mi14:37:523:40:598:267:23
7:15
#16114
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi18964120181201820054(Top 71%)12528(Top 78%)12528(Top 760%)
10K6.21 mi3.10 mi18495+46911829+18911829+18918044(Top 64%)11670(Top 72%)11670(Top 708%)
15K9.32 mi3.11 mi19001-50612032-20312032-20320054(Top 71%)12528(Top 78%)12528(Top 760%)
20K12.43 mi3.11 mi19382-38112203-17112203-17120398(Top 72%)12630(Top 78%)12630(Top 766%)
Half13.11 mi0.68 mi19367+1512196+712196+718829(Top 66%)11954(Top 74%)11954(Top 725%)
25K15.53 mi2.42 mi19219+14812127+6912127+6918690(Top 66%)11826(Top 73%)11826(Top 718%)
30K18.64 mi3.11 mi18823+39611926+20111926+20117167(Top 60%)11006(Top 68%)11006(Top 668%)
20M20.00 mi1.36 mi18480+34311743+18311743+18314083(Top 50%)9493(Top 59%)9493(Top 576%)
21M21.00 mi1.00 mi18126+35411566+17711566+17712502(Top 44%)8620(Top 54%)8620(Top 523%)
35K21.75 mi0.75 mi17825+30111426+14011426+1409644(Top 34%)7198(Top 45%)7198(Top 437%)
23M23.00 mi1.25 mi17311+51411143+28311143+2838878(Top 31%)6666(Top 41%)6666(Top 404%)
24M24.00 mi1.00 mi17027+28411007+13611007+13610894(Top 38%)7630(Top 47%)7630(Top 463%)
40K24.85 mi0.85 mi16606+42110809+19810809+1985927(Top 21%)4814(Top 30%)4814(Top 292%)
25.2M25.20 mi0.35 mi16456+15010741+6810741+687169(Top 25%)5459(Top 34%)5459(Top 331%)
Finish26.22 mi1.02 mi16114+34210576+16510576+1657371(Top 26%)5556(Top 34%)5556(Top 337%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

20054

Males

12528

M55-59

12528

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

18044

Males

11670

M55-59

11670

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

20054

Males

12528

M55-59

12528

15K→20K

9.3 - 12.4 mi

Top 72%
×5story building
+106ft-86ft

Overall

20398

Males

12630

M55-59

12630

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18829

Males

11954

M55-59

11954

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

18690

Males

11826

M55-59

11826

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

17167

Males

11006

M55-59

11006

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

14083

Males

9493

M55-59

9493

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

12502

Males

8620

M55-59

8620

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9644

Males

7198

M55-59

7198

35K→23M

21.8 - 23.0 mi

Top 31%
×5story building
+23ft-63ft

Overall

8878

Males

6666

M55-59

6666

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10894

Males

7630

M55-59

7630

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5927

Males

4814

M55-59

4814

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7169

Males

5459

M55-59

5459

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2story building
+22ft-21ft

Overall

7371

Males

5556

M55-59

5556

Passing Analysis

Category:
Athletes Passed
4179
Passed By
1329
Net Change
+2850
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18964
5K → 10K573104+469#18964#18495
10K → 15K69575-506#18495#19001
15K → 20K98479-381#19001#19382
20K → Half3924+15#19382#19367
Half → 25K23991+148#19367#19219
25K → 30K44751+396#19219#18823
30K → 20M3430+343#18823#18480
20M → 21M3562+354#18480#18126
21M → 35K3021+301#18126#17825
35K → 23M5140+514#17825#17311
23M → 24M2851+284#17311#17027
24M → 40K4210+421#17027#16606
40K → 25.2M1500+150#16606#16456
25.2M → Finish3431+342#16456#16114
TOTALS41791329+2850
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing