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BOSTON MARATHON 2026

Shea Belsky

Bib: 7937β€’M

MA

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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Age Group (M18-39)
#0 / 5723
Race Day Weather
51Β°/41Β°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
29:50
3.11 mi
Rank: #24795
Start β†’ 5K
29:50 | 9:37/mi
10K
1:00:42
6.21 mi
Rank: #25274 (-479)
5K β†’ 10K
30:52 | 9:57/mi
15K
1:32:42
9.32 mi
Rank: #25684 (-410)
10K β†’ 15K
32:00 | 10:18/mi
20K
2:04:09
12.43 mi
Rank: #25558 (+126)
15K β†’ 20K
31:27 | 10:08/mi
HALF
2:10:53
13.11 mi
Rank: #25549 (+9)
20K β†’ HALF
6:44 | 9:53/mi
25K
2:35:11
15.53 mi
Rank: #25361 (+188)
HALF β†’ 25K
24:18 | 10:02/mi
30K
3:06:42
18.64 mi
Rank: #25021 (+340)
25K β†’ 30K
31:31 | 10:09/mi
20M
3:20:31
20.00 mi
Rank: #24875 (+146)
30K β†’ 20M
13:49 | 10:11/mi
21M
3:32:11
21.00 mi
Rank: #24834 (+41)
20M β†’ 21M
11:40 | 11:40/mi
35K
3:40:13
21.75 mi
Rank: #24828 (+6)
21M β†’ 35K
8:02 | 10:45/mi
23M
3:54:05
23.00 mi
Rank: #24828
35K β†’ 23M
13:52 | 11:05/mi
24M
4:05:04
24.00 mi
Rank: #24859 (-31)
23M β†’ 24M
10:59 | 10:59/mi
40K
4:18:38
24.85 mi
Rank: #25219 (-360)
24M β†’ 40K
13:34 | 15:53/mi
25.2M
4:22:40
25.20 mi
Rank: #25207 (+12)
40K β†’ 25.2M
4:02 | 11:42/mi
FINISH
4:33:09
26.22 mi
Rank: #25182 (+25)
25.2M β†’ FINISH
10:29 | 10:18/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:10:53
Pace10:00 /mi
2nd Half
Distance13.11 mi
Time2:22:16
Pace10:52 /mi
πŸ“ŠPositive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:0729:509:3729:50
9:37
-
10K
6.21 mi11:18:591:00:429:4730:52
9:57
+0:20
15K
9.32 mi11:50:591:32:429:5732:00
10:18
+0:21
20K
12.43 mi12:22:262:04:0910:0031:27
10:08
-0:10
HALF
13.11 mi12:29:102:10:5310:006:44
9:53
-0:15
25K
15.53 mi12:53:282:35:1110:0024:18
10:02
+0:09
30K
18.64 mi13:24:593:06:4210:0131:31
10:09
+0:07
20M
20.00 mi13:38:483:20:3110:0213:49
10:11
+0:02
21M
21.00 mi13:50:283:32:1110:0711:40
11:40
+1:29
35K
21.75 mi13:58:303:40:1310:088:02
10:45
-0:55
23M
23.00 mi14:12:223:54:0510:1113:52
11:05
+0:20
24M
24.00 mi14:23:214:05:0410:1310:59
10:59
-0:06
40K
24.85 mi14:36:554:18:3810:2513:34
15:53
+4:54
25.2M
25.20 mi14:40:574:22:4010:264:02
11:42
-4:11
FINISH
26.22 mi14:51:264:33:0910:2610:29
10:18
-1:24

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

πŸ“ˆPace 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

9:37 /mi

Average Pace

10:26 /mi

Slowest Pace

15:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:50:01

84% of race

Time at Slower Pace

43:08

16% of race

Average Pace: 10:25 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:48:0729:509:3729:50
9:37
#24795
10K
6.21 mi11:18:591:00:429:4730:52
9:57
#25274
15K
9.32 mi11:50:591:32:429:5732:00
10:18
#25684
20K
12.43 mi12:22:262:04:0910:0031:27
10:08
#25558
HALF
13.11 mi12:29:102:10:5310:006:44
9:53
#25549
25K
15.53 mi12:53:282:35:1110:0024:18
10:02
#25361
30K
18.64 mi13:24:593:06:4210:0131:31
10:09
#25021
20M
20.00 mi13:38:483:20:3110:0213:49
10:11
#24875
21M
21.00 mi13:50:283:32:1110:0711:40
11:40
#24834
35K
21.75 mi13:58:303:40:1310:088:02
10:45
#24828
23M
23.00 mi14:12:223:54:0510:1113:52
11:05
#24828
24M
24.00 mi14:23:214:05:0410:1310:59
10:59
#24859
40K
24.85 mi14:36:554:18:3810:2513:34
15:53
#25219
25.2M
25.20 mi14:40:574:22:4010:264:02
11:42
#25207
FINISH
26.22 mi14:51:264:33:0910:2610:29
10:18
#25182
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24795146271462726324(Top 91%)15312(Top 94%)15312(Top 268%)
10K6.21 mi3.10 mi25274-47914854-22714854-22725675(Top 88%)15027(Top 92%)15027(Top 263%)
15K9.32 mi3.11 mi25684-41015043-18915043-18926324(Top 91%)15312(Top 94%)15312(Top 268%)
20K12.43 mi3.11 mi25558+12614981+6214981+6225311(Top 87%)14851(Top 91%)14851(Top 259%)
HALF13.11 mi0.68 mi25549+914973+814973+825349(Top 87%)14848(Top 91%)14848(Top 259%)
25K15.53 mi2.42 mi25361+18814872+10114872+10124357(Top 84%)14362(Top 88%)14362(Top 251%)
30K18.64 mi3.11 mi25021+34014691+18114691+18123487(Top 81%)13838(Top 85%)13838(Top 242%)
20M20.00 mi1.36 mi24875+14614603+8814603+8823013(Top 79%)13550(Top 83%)13550(Top 237%)
21M21.00 mi1.00 mi24834+4114567+3614567+3624493(Top 84%)14161(Top 87%)14161(Top 247%)
35K21.75 mi0.75 mi24828+614560+714560+724753(Top 85%)14272(Top 87%)14272(Top 249%)
23M23.00 mi1.25 mi2482814543+1714543+1724653(Top 85%)14173(Top 87%)14173(Top 248%)
24M24.00 mi1.00 mi24859-3114542+114542+125071(Top 86%)14341(Top 88%)14341(Top 251%)
40K24.85 mi0.85 mi25219-36014690-14814690-14828728(Top 99%)16162(Top 99%)16162(Top 282%)
25.2M25.20 mi0.35 mi25207+1214677+1314677+1323888(Top 82%)13721(Top 84%)13721(Top 240%)
FINISH26.22 mi1.02 mi25182+2514659+1814659+1824562(Top 85%)14076(Top 86%)14076(Top 246%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
Γ—21
+97ft-345ft

Overall

26324

Males

15312

M18-39

15312

5K→10K

3.1 - 6.2 mi

Top 88%
Γ—5
+79ft-138ft

Overall

25675

Males

15027

M18-39

15027

10K→15K

6.2 - 9.3 mi

Top 91%
Γ—3
+67ft-78ft

Overall

26324

Males

15312

M18-39

15312

15K→20K

9.3 - 12.4 mi

Top 87%
Γ—5
+106ft-86ft

Overall

25311

Males

14851

M18-39

14851

20K→HALF

12.4 - 13.1 mi

Top 87%
Γ—2
+19ft-37ft

Overall

25349

Males

14848

M18-39

14848

HALF→25K

13.1 - 15.5 mi

Top 84%
Γ—4
+66ft-88ft

Overall

24357

Males

14362

M18-39

14362

25K→30K

15.5 - 18.6 mi

Top 81%
Γ—9
+181ft-148ft

Overall

23487

Males

13838

M18-39

13838

30K→20M

18.6 - 20.0 mi

Top 79%
Γ—5
+64ft-50ft

Overall

23013

Males

13550

M18-39

13550

20M→21M

20.0 - 21.0 mi

Top 84%
Γ—8
+106ft-24ft

Overall

24493

Males

14161

M18-39

14161

21M→35K

21.0 - 21.8 mi

Top 85%
Γ—7
+17ft-86ft

Overall

24753

Males

14272

M18-39

14272

35K→23M

21.8 - 23.0 mi

Top 85%
Γ—5
+23ft-63ft

Overall

24653

Males

14173

M18-39

14173

23M→24M

23.0 - 24.0 mi

Top 86%
Γ—6
+12ft-82ft

Overall

25071

Males

14341

M18-39

14341

24M→40K

24.0 - 24.9 mi

Top 99%
Γ—1
+6ft-20ft

Overall

28728

Males

16162

M18-39

16162

40K→25.2M

24.9 - 25.2 mi

Top 82%
Γ—1
+13ft-16ft

Overall

23888

Males

13721

M18-39

13721

25.2M→FINISH

25.2 - 26.2 mi

Top 85%
Γ—2
+22ft-21ft

Overall

24562

Males

14076

M18-39

14076

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1286
Passed By
1673
Net Change
-387
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#24795
5K β†’ 10K62541-479#24795#25274
10K β†’ 15K45455-410#25274#25684
15K β†’ 20K18256+126#25684#25558
20K β†’ HALF2819+9#25558#25549
HALF β†’ 25K1979+188#25549#25361
25K β†’ 30K35414+340#25361#25021
30K β†’ 20M1548+146#25021#24875
20M β†’ 21M7332+41#24875#24834
21M β†’ 35K3731+6#24834#24828
35K β†’ 23M62620#24828#24828
23M β†’ 24M2556-31#24828#24859
24M β†’ 40K2362-360#24859#25219
40K β†’ 25.2M219+12#25219#25207
25.2M β†’ FINISH4419+25#25207#25182
TOTALS12861673-387
πŸ“Š

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Export & Support

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Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing