Boston Marathon logo
BOSTON MARATHON 2025

Clyde Simms

Bib: 28087•M

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:47
Rank: #26139
Start → 5K
31:47 | 10:14/mi
10K· 6.21 mi
1:05:07
Rank: #26454 (-315)
5K → 10K
33:20 | 10:44/mi
15K· 9.32 mi
1:37:57
Rank: #26299 (+155)
10K → 15K
32:50 | 10:34/mi
20K· 12.43 mi
2:13:27
Rank: #26389 (-90)
15K → 20K
35:30 | 11:26/mi
Half· 13.11 mi
2:20:36
Rank: #26357 (+32)
20K → Half
7:09 | 10:29/mi
25K· 15.53 mi
2:48:09
Rank: #26230 (+127)
Half → 25K
27:33 | 11:22/mi
30K· 18.64 mi
3:24:32
Rank: #26019 (+211)
25K → 30K
36:23 | 11:43/mi
20M
3:41:47
Rank: #26051 (-32)
30K → 20M
17:15 | 12:42/mi
21M
3:55:56
Rank: #26094 (-43)
20M → 21M
14:09 | 14:09/mi
35K· 21.75 mi
4:05:16
Rank: #26110 (-16)
21M → 35K
9:20 | 12:29/mi
23M
4:20:41
Rank: #26102 (+8)
35K → 23M
15:25 | 12:19/mi
24M
4:33:45
Rank: #26150 (-48)
23M → 24M
13:04 | 13:04/mi
40K· 24.85 mi
4:45:51
Rank: #26219 (-69)
24M → 40K
12:06 | 14:09/mi
25.2M
4:51:03
Rank: #26247 (-28)
40K → 25.2M
5:12 | 15:05/mi
Finish· 26.22 mi
5:02:17
Rank: #26232 (+15)
25.2M → Finish
11:14 | 11:01/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
Time2:20:36
Pace10:43 /mi
2nd Half
Distance13.11 mi
Time2:41:41
Pace12:20 /mi
📊Positive Split: 15.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:2931:4710:1431:47
10:14
-
10K
6.21 mi12:29:491:05:0710:2933:20
10:44
+0:30
15K
9.32 mi13:02:391:37:5710:3132:50
10:34
-0:10
20K
12.43 mi13:38:092:13:2710:4435:30
11:26
+0:52
Half
13.11 mi13:45:182:20:3610:437:09
10:29
-0:57
25K
15.53 mi14:12:512:48:0910:4927:33
11:22
+0:53
30K
18.64 mi14:49:143:24:3210:5836:23
11:43
+0:21
20M
20.00 mi15:06:293:41:4711:0517:15
12:42
+0:59
21M
21.00 mi15:20:383:55:5611:1414:09
14:09
+1:27
35K
21.75 mi15:29:584:05:1611:179:20
12:29
-1:40
23M
23.00 mi15:45:234:20:4111:2015:25
12:19
-0:10
24M
24.00 mi15:58:274:33:4511:2413:04
13:04
+0:45
40K
24.85 mi16:10:334:45:5111:3012:06
14:09
+1:05
25.2M
25.20 mi16:15:454:51:0311:335:12
15:05
+0:56
Finish
26.22 mi16:26:595:02:1711:3211:14
11:01
-4:04

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

10:14 /mi

Average Pace

11:32 /mi

Slowest Pace

15:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:06

35% of race

Time at Steady Pace

2:06:05

42% of race

Time at Slower Pace

1:11:06

24% of race

Average Pace: 11:32 /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 mi11:56:2931:4710:1431:47
10:14
#26139
10K
6.21 mi12:29:491:05:0710:2933:20
10:44
#26454
15K
9.32 mi13:02:391:37:5710:3132:50
10:34
#26299
20K
12.43 mi13:38:092:13:2710:4435:30
11:26
#26389
Half
13.11 mi13:45:182:20:3610:437:09
10:29
#26357
25K
15.53 mi14:12:512:48:0910:4927:33
11:22
#26230
30K
18.64 mi14:49:143:24:3210:5836:23
11:43
#26019
20M
20.00 mi15:06:293:41:4711:0517:15
12:42
#26051
21M
21.00 mi15:20:383:55:5611:1414:09
14:09
#26094
35K
21.75 mi15:29:584:05:1611:179:20
12:29
#26110
23M
23.00 mi15:45:234:20:4111:2015:25
12:19
#26102
24M
24.00 mi15:58:274:33:4511:2413:04
13:04
#26150
40K
24.85 mi16:10:334:45:5111:3012:06
14:09
#26219
25.2M
25.20 mi16:15:454:51:0311:335:12
15:05
#26247
Finish
26.22 mi16:26:595:02:1711:3211:14
11:01
#26232
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi26139152411524126046(Top 92%)15167(Top 94%)15167(Top 675%)
10K6.21 mi3.10 mi26454-31515361-12015361-12026650(Top 94%)15436(Top 96%)15436(Top 687%)
15K9.32 mi3.11 mi26299+15515288+7315288+7326046(Top 92%)15167(Top 94%)15167(Top 675%)
20K12.43 mi3.11 mi26389-9015319-3115319-3126546(Top 93%)15356(Top 95%)15356(Top 683%)
Half13.11 mi0.68 mi26357+3215308+1115308+1125772(Top 91%)15007(Top 93%)15007(Top 668%)
25K15.53 mi2.42 mi26230+12715255+5315255+5325693(Top 90%)14937(Top 93%)14937(Top 665%)
30K18.64 mi3.11 mi26019+21115116+13915116+13925164(Top 89%)14613(Top 91%)14613(Top 650%)
20M20.00 mi1.36 mi26051-3215120-415120-426136(Top 92%)14987(Top 93%)14987(Top 667%)
21M21.00 mi1.00 mi26094-4315125-515125-526383(Top 93%)15064(Top 94%)15064(Top 670%)
35K21.75 mi0.75 mi26110-1615129-415129-426430(Top 93%)15063(Top 94%)15063(Top 670%)
23M23.00 mi1.25 mi26102+815114+1515114+1525551(Top 90%)14602(Top 91%)14602(Top 650%)
24M24.00 mi1.00 mi26150-4815124-1015124-1026930(Top 95%)15261(Top 95%)15261(Top 679%)
40K24.85 mi0.85 mi26219-6915144-2015144-2027294(Top 96%)15439(Top 96%)15439(Top 687%)
25.2M25.20 mi0.35 mi26247-2815151-715151-727189(Top 96%)15376(Top 95%)15376(Top 684%)
Finish26.22 mi1.02 mi26232+1515142+915142+925415(Top 89%)14491(Top 90%)14491(Top 645%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21stories
+97ft-345ft

Overall

26046

Males

15167

M40-44

15167

5K→10K

3.1 - 6.2 mi

Top 94%
×5stories
+79ft-138ft

Overall

26650

Males

15436

M40-44

15436

10K→15K

6.2 - 9.3 mi

Top 92%
×3stories
+67ft-78ft

Overall

26046

Males

15167

M40-44

15167

15K→20K

9.3 - 12.4 mi

Top 93%
×5stories
+106ft-86ft

Overall

26546

Males

15356

M40-44

15356

20K→Half

12.4 - 13.1 mi

Top 91%
×2stories
+19ft-37ft

Overall

25772

Males

15007

M40-44

15007

Half→25K

13.1 - 15.5 mi

Top 90%
×4stories
+66ft-88ft

Overall

25693

Males

14937

M40-44

14937

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

25164

Males

14613

M40-44

14613

30K→20M

18.6 - 20.0 mi

Top 92%
×5stories
+64ft-50ft

Overall

26136

Males

14987

M40-44

14987

20M→21M

20.0 - 21.0 mi

Top 93%
×8stories
+106ft-24ft

Overall

26383

Males

15064

M40-44

15064

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

26430

Males

15063

M40-44

15063

35K→23M

21.8 - 23.0 mi

Top 90%
×5stories
+23ft-63ft

Overall

25551

Males

14602

M40-44

14602

23M→24M

23.0 - 24.0 mi

Top 95%
×6stories
+12ft-82ft

Overall

26930

Males

15261

M40-44

15261

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

27294

Males

15439

M40-44

15439

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

27189

Males

15376

M40-44

15376

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2stories
+22ft-21ft

Overall

25415

Males

14491

M40-44

14491

Passing Analysis

Category:
Athletes Passed
1005
Passed By
1098
Net Change
-93
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26139
5K → 10K76391-315#26139#26454
10K → 15K20651+155#26454#26299
15K → 20K89179-90#26299#26389
20K → Half408+32#26389#26357
Half → 25K15932+127#26357#26230
25K → 30K23120+211#26230#26019
30K → 20M4678-32#26019#26051
20M → 21M1962-43#26051#26094
21M → 35K2642-16#26094#26110
35K → 23M4941+8#26110#26102
23M → 24M1967-48#26102#26150
24M → 40K675-69#26150#26219
40K → 25.2M533-28#26219#26247
25.2M → Finish3419+15#26247#26232
TOTALS10051098-93
📊

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