Boston Marathon logo
BOSTON MARATHON 2025

Joseph Suh

Bib: 31228•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
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
27:50
Rank: #22237
Start → 5K
27:50 | 8:58/mi
10K· 6.21 mi
54:22
Rank: #21161 (+1076)
5K → 10K
26:32 | 8:32/mi
15K· 9.32 mi
1:21:27
Rank: #20944 (+217)
10K → 15K
27:05 | 8:43/mi
20K· 12.43 mi
1:48:43
Rank: #20670 (+274)
15K → 20K
27:16 | 8:47/mi
Half· 13.11 mi
1:54:35
Rank: #20622 (+48)
20K → Half
5:52 | 8:36/mi
25K· 15.53 mi
2:16:36
Rank: #20590 (+32)
Half → 25K
22:01 | 9:05/mi
30K· 18.64 mi
2:47:01
Rank: #20681 (-91)
25K → 30K
30:25 | 9:47/mi
20M
3:00:31
Rank: #20676 (+5)
30K → 20M
13:30 | 9:56/mi
21M
3:11:16
Rank: #20673 (+3)
20M → 21M
10:45 | 10:45/mi
35K· 21.75 mi
3:17:59
Rank: #20588 (+85)
21M → 35K
6:43 | 8:59/mi
23M
3:30:26
Rank: #20589 (-1)
35K → 23M
12:27 | 9:57/mi
24M
3:40:36
Rank: #20692 (-103)
23M → 24M
10:10 | 10:10/mi
40K· 24.85 mi
3:49:13
Rank: #20707 (-15)
24M → 40K
8:37 | 10:05/mi
25.2M
3:52:46
Rank: #20672 (+35)
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
4:02:30
Rank: #20707 (-35)
25.2M → Finish
9:44 | 9:33/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
Time1:54:35
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time2:07:55
Pace9:45 /mi
📊Positive Split: 11.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3527:508:5827:50
8:58
-
10K
6.21 mi12:17:0754:228:4526:32
8:32
-0:26
15K
9.32 mi12:44:121:21:278:4427:05
8:43
+0:11
20K
12.43 mi13:11:281:48:438:4527:16
8:47
+0:04
Half
13.11 mi13:17:201:54:358:445:52
8:36
-0:11
25K
15.53 mi13:39:212:16:368:4822:01
9:05
+0:29
30K
18.64 mi14:09:462:47:018:5830:25
9:47
+0:42
20M
20.00 mi14:23:163:00:319:0213:30
9:56
+0:09
21M
21.00 mi14:34:013:11:169:0610:45
10:45
+0:49
35K
21.75 mi14:40:443:17:599:066:43
8:59
-1:46
23M
23.00 mi14:53:113:30:269:0912:27
9:57
+0:58
24M
24.00 mi15:03:213:40:369:1210:10
10:10
+0:13
40K
24.85 mi15:11:583:49:139:138:37
10:05
-0:05
25.2M
25.20 mi15:15:313:52:469:143:33
10:18
+0:13
Finish
26.22 mi15:25:154:02:309:159:44
9:33
-0:45

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

8:32 /mi

Average Pace

9:15 /mi

Slowest Pace

10:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:19

59% of race

Time at Steady Pace

40:09

17% of race

Time at Slower Pace

59:02

24% of race

Average Pace: 9:15 /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 mi11:50:3527:508:5827:50
8:58
#22237
10K
6.21 mi12:17:0754:228:4526:32
8:32
#21161
15K
9.32 mi12:44:121:21:278:4427:05
8:43
#20944
20K
12.43 mi13:11:281:48:438:4527:16
8:47
#20670
Half
13.11 mi13:17:201:54:358:445:52
8:36
#20622
25K
15.53 mi13:39:212:16:368:4822:01
9:05
#20590
30K
18.64 mi14:09:462:47:018:5830:25
9:47
#20681
20M
20.00 mi14:23:163:00:319:0213:30
9:56
#20676
21M
21.00 mi14:34:013:11:169:0610:45
10:45
#20673
35K
21.75 mi14:40:443:17:599:066:43
8:59
#20588
23M
23.00 mi14:53:113:30:269:0912:27
9:57
#20589
24M
24.00 mi15:03:213:40:369:1210:10
10:10
#20692
40K
24.85 mi15:11:583:49:139:138:37
10:05
#20707
25.2M
25.20 mi15:15:313:52:469:143:33
10:18
#20672
Finish
26.22 mi15:25:154:02:309:159:44
9:33
#20707
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22237134151341520580(Top 72%)12767(Top 79%)12767(Top 226%)
10K6.21 mi3.10 mi21161+107612965+45012965+45020032(Top 71%)12495(Top 78%)12495(Top 221%)
15K9.32 mi3.11 mi20944+21712873+9212873+9220580(Top 72%)12767(Top 79%)12767(Top 226%)
20K12.43 mi3.11 mi20670+27412762+11112762+11119818(Top 70%)12382(Top 77%)12382(Top 219%)
Half13.11 mi0.68 mi20622+4812741+2112741+2119797(Top 70%)12390(Top 77%)12390(Top 220%)
25K15.53 mi2.42 mi20590+3212713+2812713+2820263(Top 71%)12530(Top 78%)12530(Top 222%)
30K18.64 mi3.11 mi20681-9112709+412709+420958(Top 74%)12693(Top 79%)12693(Top 225%)
20M20.00 mi1.36 mi20676+512692+1712692+1720707(Top 73%)12456(Top 77%)12456(Top 221%)
21M21.00 mi1.00 mi20673+312675+1712675+1720710(Top 73%)12358(Top 77%)12358(Top 219%)
35K21.75 mi0.75 mi20588+8512621+5412621+5418126(Top 64%)11116(Top 69%)11116(Top 197%)
23M23.00 mi1.25 mi20589-112597+2412597+2420295(Top 71%)12049(Top 75%)12049(Top 214%)
24M24.00 mi1.00 mi20692-10312628-3112628-3121836(Top 77%)12724(Top 79%)12724(Top 226%)
40K24.85 mi0.85 mi20707-1512620+812620+820698(Top 73%)12138(Top 75%)12138(Top 215%)
25.2M25.20 mi0.35 mi20672+3512599+2112599+2118260(Top 64%)10953(Top 68%)10953(Top 194%)
Finish26.22 mi1.02 mi20707-3512593+612593+621355(Top 75%)12461(Top 77%)12461(Top 221%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

20580

Males

12767

M18-39

12767

5K→10K

3.1 - 6.2 mi

Top 71%
×5stories
+79ft-138ft

Overall

20032

Males

12495

M18-39

12495

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

20580

Males

12767

M18-39

12767

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

19818

Males

12382

M18-39

12382

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

19797

Males

12390

M18-39

12390

Half→25K

13.1 - 15.5 mi

Top 71%
×4stories
+66ft-88ft

Overall

20263

Males

12530

M18-39

12530

25K→30K

15.5 - 18.6 mi

Top 74%
×9stories
+181ft-148ft

Overall

20958

Males

12693

M18-39

12693

30K→20M

18.6 - 20.0 mi

Top 73%
×5stories
+64ft-50ft

Overall

20707

Males

12456

M18-39

12456

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

20710

Males

12358

M18-39

12358

21M→35K

21.0 - 21.8 mi

Top 64%
×7stories
+17ft-86ft

Overall

18126

Males

11116

M18-39

11116

35K→23M

21.8 - 23.0 mi

Top 71%
×5stories
+23ft-63ft

Overall

20295

Males

12049

M18-39

12049

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

21836

Males

12724

M18-39

12724

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20698

Males

12138

M18-39

12138

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18260

Males

10953

M18-39

10953

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

21355

Males

12461

M18-39

12461

Passing Analysis

Category:
Athletes Passed
2700
Passed By
1170
Net Change
+1530
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22237
5K → 10K110125+1076#22237#21161
10K → 15K30790+217#21161#20944
15K → 20K33359+274#20944#20670
20K → Half6012+48#20670#20622
Half → 25K173141+32#20622#20590
25K → 30K191282-91#20590#20681
30K → 20M106101+5#20681#20676
20M → 21M9390+3#20676#20673
21M → 35K927+85#20673#20588
35K → 23M9091-1#20588#20589
23M → 24M28131-103#20589#20692
24M → 40K5267-15#20692#20707
40K → 25.2M405+35#20707#20672
25.2M → Finish3469-35#20672#20707
TOTALS27001170+1530
📊

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