Boston Marathon logo
BOSTON MARATHON 2024

Thomas Bellsky

Bib: 5628•M

MI

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 12%
Gender (Male)
#0 / 14578
Top 20%
Masters (Masters Men)
#0 / 9729
Top 9%
Division (M40-44)
#0 / 2009
Top 26%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:36
Rank: #4239
Start → 5K
20:36 | 6:38/mi
10K· 6.21 mi
41:34
Rank: #4449 (-210)
5K → 10K
20:58 | 6:45/mi
15K· 9.32 mi
1:02:48
Rank: #4607 (-158)
10K → 15K
21:14 | 6:50/mi
20K· 12.43 mi
1:24:24
Rank: #4663 (-56)
15K → 20K
21:36 | 6:57/mi
Half· 13.11 mi
1:29:02
Rank: #4644 (+19)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:45:51
Rank: #4451 (+193)
Half → 25K
16:49 | 6:56/mi
30K· 18.64 mi
2:07:57
Rank: #4172 (+279)
25K → 30K
22:06 | 7:07/mi
20M
2:17:57
Rank: #4080 (+92)
30K → 20M
10:00 | 7:22/mi
21M
2:25:34
Rank: #3914 (+166)
20M → 21M
7:37 | 7:37/mi
35K· 21.75 mi
2:30:54
Rank: #3855 (+59)
21M → 35K
5:20 | 7:08/mi
23M
2:39:53
Rank: #3680 (+175)
35K → 23M
8:59 | 7:10/mi
24M
2:46:37
Rank: #3500 (+180)
23M → 24M
6:44 | 6:44/mi
40K· 24.85 mi
2:52:30
Rank: #3364 (+136)
24M → 40K
5:53 | 6:53/mi
25.2M
2:55:06
Rank: #3298 (+66)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
3:01:40
Rank: #3136 (+162)
25.2M → Finish
6:34 | 6:27/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
Time1:29:02
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:32:38
Pace7:04 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0620:366:3820:36
6:38
-
10K
6.21 mi10:45:0441:346:4120:58
6:45
+0:07
15K
9.32 mi11:06:181:02:486:4421:14
6:50
+0:05
20K
12.43 mi11:27:541:24:246:4721:36
6:57
+0:07
Half
13.11 mi11:32:321:29:026:474:38
6:47
-0:10
25K
15.53 mi11:49:211:45:516:4916:49
6:56
+0:09
30K
18.64 mi12:11:272:07:576:5222:06
7:07
+0:11
20M
20.00 mi12:21:272:17:576:5410:00
7:22
+0:15
21M
21.00 mi12:29:042:25:346:567:37
7:37
+0:15
35K
21.75 mi12:34:242:30:546:565:20
7:08
-0:29
23M
23.00 mi12:43:232:39:536:578:59
7:10
+0:02
24M
24.00 mi12:50:072:46:376:576:44
6:44
-0:26
40K
24.85 mi12:56:002:52:306:565:53
6:53
+0:09
25.2M
25.20 mi12:58:362:55:066:572:36
7:32
+0:39
Finish
26.22 mi13:05:103:01:406:566:34
6:27
-1:05

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

6:27 /mi

Average Pace

6:56 /mi

Slowest Pace

7:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:02

69% of race

Time at Steady Pace

49:01

27% of race

Time at Slower Pace

7:37

4% of race

Average Pace: 6:56 /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 mi10:24:0620:366:3820:36
6:38
#4239
10K
6.21 mi10:45:0441:346:4120:58
6:45
#4449
15K
9.32 mi11:06:181:02:486:4421:14
6:50
#4607
20K
12.43 mi11:27:541:24:246:4721:36
6:57
#4663
Half
13.11 mi11:32:321:29:026:474:38
6:47
#4644
25K
15.53 mi11:49:211:45:516:4916:49
6:56
#4451
30K
18.64 mi12:11:272:07:576:5222:06
7:07
#4172
20M
20.00 mi12:21:272:17:576:5410:00
7:22
#4080
21M
21.00 mi12:29:042:25:346:567:37
7:37
#3914
35K
21.75 mi12:34:242:30:546:565:20
7:08
#3855
23M
23.00 mi12:43:232:39:536:578:59
7:10
#3680
24M
24.00 mi12:50:072:46:376:576:44
6:44
#3500
40K
24.85 mi12:56:002:52:306:565:53
6:53
#3364
25.2M
25.20 mi12:58:362:55:066:572:36
7:32
#3298
Finish
26.22 mi13:05:103:01:406:566:34
6:27
#3136
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4239399539955036(Top 20%)4631(Top 32%)4631(Top 231%)
10K6.21 mi3.10 mi4449-2104169-1744169-1744719(Top 18%)4383(Top 30%)4383(Top 218%)
15K9.32 mi3.11 mi4607-1584296-1274296-1275036(Top 20%)4631(Top 32%)4631(Top 231%)
20K12.43 mi3.11 mi4663-564335-394335-394937(Top 19%)4519(Top 31%)4519(Top 225%)
Half13.11 mi0.68 mi4644+194316+194316+194387(Top 17%)4053(Top 28%)4053(Top 202%)
25K15.53 mi2.42 mi4451+1934143+1734143+1733990(Top 16%)3687(Top 25%)3687(Top 184%)
30K18.64 mi3.11 mi4172+2793887+2563887+2563397(Top 13%)3120(Top 21%)3120(Top 155%)
20M20.00 mi1.36 mi4080+923786+1013786+1013762(Top 15%)3369(Top 23%)3369(Top 168%)
21M21.00 mi1.00 mi3914+1663634+1523634+1522856(Top 11%)2580(Top 18%)2580(Top 128%)
35K21.75 mi0.75 mi3855+593575+593575+593501(Top 14%)3095(Top 21%)3095(Top 154%)
23M23.00 mi1.25 mi3680+1753410+1653410+1652493(Top 10%)2244(Top 15%)2244(Top 112%)
24M24.00 mi1.00 mi3500+1803240+1703240+1701490(Top 6%)1383(Top 9%)1383(Top 69%)
40K24.85 mi0.85 mi3364+1363117+1233117+1231547(Top 6%)1417(Top 10%)1417(Top 71%)
25.2M25.20 mi0.35 mi3298+663057+603057+601545(Top 6%)1403(Top 10%)1403(Top 70%)
Finish26.22 mi1.02 mi3136+1622908+1492908+1491252(Top 5%)1141(Top 8%)1141(Top 57%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5036

Males

4631

M40-44

4631

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4719

Males

4383

M40-44

4383

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5036

Males

4631

M40-44

4631

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

4937

Males

4519

M40-44

4519

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4387

Males

4053

M40-44

4053

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

3990

Males

3687

M40-44

3687

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3397

Males

3120

M40-44

3120

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

3762

Males

3369

M40-44

3369

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

2856

Males

2580

M40-44

2580

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3501

Males

3095

M40-44

3095

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2493

Males

2244

M40-44

2244

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1490

Males

1383

M40-44

1383

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1547

Males

1417

M40-44

1417

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1545

Males

1403

M40-44

1403

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1252

Males

1141

M40-44

1141

Passing Analysis

Category:
Athletes Passed
2084
Passed By
981
Net Change
+1103
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4239
5K → 10K106316-210#4239#4449
10K → 15K78236-158#4449#4607
15K → 20K133189-56#4607#4663
20K → Half3718+19#4663#4644
Half → 25K24451+193#4644#4451
25K → 30K34162+279#4451#4172
30K → 20M14755+92#4172#4080
20M → 21M18519+166#4080#3914
21M → 35K8324+59#3914#3855
35K → 23M18510+175#3855#3680
23M → 24M1811+180#3680#3500
24M → 40K1360+136#3500#3364
40K → 25.2M660+66#3364#3298
25.2M → Finish1620+162#3298#3136
TOTALS2084981+1103
📊

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