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BOSTON MARATHON 2025

Cyrus Belmont

Bib: 31343•M

MA

0:00
0:00
/ mi
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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
25:01
Rank: #16998
Start → 5K
25:01 | 8:03/mi
10K· 6.21 mi
50:33
Rank: #17517 (-519)
5K → 10K
25:32 | 8:13/mi
15K· 9.32 mi
1:15:41
Rank: #17224 (+293)
10K → 15K
25:08 | 8:05/mi
20K· 12.43 mi
1:41:18
Rank: #17041 (+183)
15K → 20K
25:37 | 8:15/mi
Half· 13.11 mi
1:46:40
Rank: #16933 (+108)
20K → Half
5:22 | 7:52/mi
25K· 15.53 mi
2:06:21
Rank: #16534 (+399)
Half → 25K
19:41 | 8:07/mi
30K· 18.64 mi
2:32:51
Rank: #16205 (+329)
25K → 30K
26:30 | 8:32/mi
20M
2:44:23
Rank: #15991 (+214)
30K → 20M
11:32 | 8:29/mi
21M
2:53:17
Rank: #15764 (+227)
20M → 21M
8:54 | 8:54/mi
35K· 21.75 mi
2:59:42
Rank: #15744 (+20)
21M → 35K
6:25 | 8:35/mi
23M
3:10:11
Rank: #15502 (+242)
35K → 23M
10:29 | 8:22/mi
24M
3:18:36
Rank: #15428 (+74)
23M → 24M
8:25 | 8:25/mi
40K· 24.85 mi
3:25:35
Rank: #15249 (+179)
24M → 40K
6:59 | 8:10/mi
25.2M
3:28:49
Rank: #15230 (+19)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:36:52
Rank: #15061 (+169)
25.2M → Finish
8:03 | 7:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:40
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:50:12
Pace8:24 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:0425:018:0325:01
8:03
-
10K
6.21 mi12:15:3650:338:0825:32
8:13
+0:10
15K
9.32 mi12:40:441:15:418:0725:08
8:05
-0:08
20K
12.43 mi13:06:211:41:188:0925:37
8:15
+0:10
Half
13.11 mi13:11:431:46:408:085:22
7:52
-0:23
25K
15.53 mi13:31:242:06:218:0819:41
8:07
+0:15
30K
18.64 mi13:57:542:32:518:1226:30
8:32
+0:25
20M
20.00 mi14:09:262:44:238:1311:32
8:29
-0:03
21M
21.00 mi14:18:202:53:178:158:54
8:54
+0:25
35K
21.75 mi14:24:452:59:428:166:25
8:35
-0:19
23M
23.00 mi14:35:143:10:118:1610:29
8:22
-0:13
24M
24.00 mi14:43:393:18:368:178:25
8:25
+0:03
40K
24.85 mi14:50:383:25:358:166:59
8:10
-0:15
25.2M
25.20 mi14:53:523:28:498:173:14
9:23
+1:13
Finish
26.22 mi15:01:553:36:528:178:03
7:54
-1:29

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

7:52 /mi

Average Pace

8:17 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:24:44

94% of race

Time at Steady Pace

8:54

4% of race

Time at Slower Pace

3:14

1% of race

Average Pace: 8:16 /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 mi11:50:0425:018:0325:01
8:03
#16998
10K
6.21 mi12:15:3650:338:0825:32
8:13
#17517
15K
9.32 mi12:40:441:15:418:0725:08
8:05
#17224
20K
12.43 mi13:06:211:41:188:0925:37
8:15
#17041
Half
13.11 mi13:11:431:46:408:085:22
7:52
#16933
25K
15.53 mi13:31:242:06:218:0819:41
8:07
#16534
30K
18.64 mi13:57:542:32:518:1226:30
8:32
#16205
20M
20.00 mi14:09:262:44:238:1311:32
8:29
#15991
21M
21.00 mi14:18:202:53:178:158:54
8:54
#15764
35K
21.75 mi14:24:452:59:428:166:25
8:35
#15744
23M
23.00 mi14:35:143:10:118:1610:29
8:22
#15502
24M
24.00 mi14:43:393:18:368:178:25
8:25
#15428
40K
24.85 mi14:50:383:25:358:166:59
8:10
#15249
25.2M
25.20 mi14:53:523:28:498:173:14
9:23
#15230
Finish
26.22 mi15:01:553:36:528:178:03
7:54
#15061
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi16998112071120716658(Top 59%)11072(Top 69%)11072(Top 196%)
10K6.21 mi3.10 mi17517-51911417-21011417-21018002(Top 63%)11656(Top 72%)11656(Top 207%)
15K9.32 mi3.11 mi17224+29311327+9011327+9016658(Top 59%)11072(Top 69%)11072(Top 196%)
20K12.43 mi3.11 mi17041+18311223+10411223+10416583(Top 58%)11000(Top 68%)11000(Top 195%)
Half13.11 mi0.68 mi16933+10811182+4111182+4114766(Top 52%)10241(Top 64%)10241(Top 182%)
25K15.53 mi2.42 mi16534+39911006+17611006+17614746(Top 52%)10093(Top 63%)10093(Top 179%)
30K18.64 mi3.11 mi16205+32910815+19110815+19114931(Top 53%)10026(Top 62%)10026(Top 178%)
20M20.00 mi1.36 mi15991+21410682+13310682+13313690(Top 48%)9305(Top 58%)9305(Top 165%)
21M21.00 mi1.00 mi15764+22710547+13510547+13512913(Top 45%)8813(Top 55%)8813(Top 156%)
35K21.75 mi0.75 mi15744+2010518+2910518+2915903(Top 56%)10130(Top 63%)10130(Top 180%)
23M23.00 mi1.25 mi15502+24210388+13010388+13012497(Top 44%)8475(Top 53%)8475(Top 150%)
24M24.00 mi1.00 mi15428+7410328+6010328+6013982(Top 49%)9132(Top 57%)9132(Top 162%)
40K24.85 mi0.85 mi15249+17910220+10810220+10811364(Top 40%)7755(Top 48%)7755(Top 137%)
25.2M25.20 mi0.35 mi15230+1910198+2210198+2213845(Top 49%)8879(Top 55%)8879(Top 157%)
Finish26.22 mi1.02 mi15061+16910110+8810110+8812156(Top 43%)8122(Top 50%)8122(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

16658

Males

11072

M18-39

11072

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

18002

Males

11656

M18-39

11656

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

16658

Males

11072

M18-39

11072

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

16583

Males

11000

M18-39

11000

20K→Half

12.4 - 13.1 mi

Top 52%
×2stories
+19ft-37ft

Overall

14766

Males

10241

M18-39

10241

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

14746

Males

10093

M18-39

10093

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

14931

Males

10026

M18-39

10026

30K→20M

18.6 - 20.0 mi

Top 48%
×5stories
+64ft-50ft

Overall

13690

Males

9305

M18-39

9305

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

12913

Males

8813

M18-39

8813

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

15903

Males

10130

M18-39

10130

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12497

Males

8475

M18-39

8475

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

13982

Males

9132

M18-39

9132

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11364

Males

7755

M18-39

7755

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13845

Males

8879

M18-39

8879

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

12156

Males

8122

M18-39

8122

Passing Analysis

Category:
Athletes Passed
3014
Passed By
1077
Net Change
+1937
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16998
5K → 10K125644-519#16998#17517
10K → 15K37784+293#17517#17224
15K → 20K28198+183#17224#17041
20K → Half1113+108#17041#16933
Half → 25K41011+399#16933#16534
25K → 30K40071+329#16534#16205
30K → 20M23723+214#16205#15991
20M → 21M23912+227#15991#15764
21M → 35K7353+20#15764#15744
35K → 23M25311+242#15744#15502
23M → 24M10430+74#15502#15428
24M → 40K1834+179#15428#15249
40K → 25.2M4425+19#15249#15230
25.2M → Finish1778+169#15230#15061
TOTALS30141077+1937
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing