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BOSTON MARATHON 2025

Mark Claycomb

Bib: 21405•M

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 49%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M65-69)
#0 / 639
Top 7%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:05/mi
25:07
↑ 97↓ 3451.5%
10K· 6.21 mi
7:58/mi
49:53
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:14:48
↑ 67↓ 78
20K· 12.43 mi
8:13/mi
1:40:19
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:45:37
↑ 19↓ 370.5%
25K· 15.53 mi
7:56/mi
2:04:51
↑ 66↓ 880.2%
30K· 18.64 mi
8:02/mi
2:29:50
↑ 181↓ 1480.2%
20M
8:11/mi
2:40:57
↑ 64↓ 500.2%
21M
8:54/mi
2:49:51
↑ 106↓ 241.6%
35K· 21.75 mi
8:03/mi
2:55:52
↑ 17↓ 861.7%
23M
8:16/mi
3:06:13
↑ 23↓ 630.6%
24M
7:58/mi
3:14:11
↓ 821.3%
40K· 24.85 mi
8:11/mi
3:21:11
↓ 200.3%
25.2M
8:48/mi
3:24:13
↑ 13↓ 160.2%
Finish· 26.22 mi
7:59/mi
3:32:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:37
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:46:44
Pace8:09 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:3725:078:0525:07
8:05
-
10K
6.21 mi11:48:2349:538:0224:46
7:58
-0:07
15K
9.32 mi12:13:181:14:488:0224:55
8:01
+0:03
20K
12.43 mi12:38:491:40:198:0425:31
8:13
+0:12
Half
13.11 mi12:44:071:45:378:035:18
7:46
-0:27
25K
15.53 mi13:03:212:04:518:0219:14
7:56
+0:10
30K
18.64 mi13:28:202:29:508:0224:59
8:02
+0:06
20M
20.00 mi13:39:272:40:578:0311:07
8:11
+0:09
21M
21.00 mi13:48:212:49:518:058:54
8:54
+0:43
35K
21.75 mi13:54:222:55:528:056:01
8:03
-0:51
23M
23.00 mi14:04:433:06:138:0610:21
8:16
+0:13
24M
24.00 mi14:12:413:14:118:057:58
7:58
-0:18
40K
24.85 mi14:19:413:21:118:067:00
8:11
+0:13
25.2M
25.20 mi14:22:433:24:138:063:02
8:48
+0:37
Finish
26.22 mi14:30:513:32:218:068:08
7:59
-0:49

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

7:46 /mi

Average Pace

8:06 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:25

94% of race

Time at Steady Pace

11:56

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:06 /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 mi11:23:3725:078:0525:07
8:05
#17241
10K
6.21 mi11:48:2349:538:0224:46
7:58
#16734
15K
9.32 mi12:13:181:14:488:0224:55
8:01
#16510
20K
12.43 mi12:38:491:40:198:0425:31
8:13
#16467
Half
13.11 mi12:44:071:45:378:035:18
7:46
#16350
25K
15.53 mi13:03:212:04:518:0219:14
7:56
#15861
30K
18.64 mi13:28:202:29:508:0224:59
8:02
#15023
20M
20.00 mi13:39:272:40:578:0311:07
8:11
#14726
21M
21.00 mi13:48:212:49:518:058:54
8:54
#14586
35K
21.75 mi13:54:222:55:528:056:01
8:03
#14478
23M
23.00 mi14:04:433:06:138:0610:21
8:16
#14313
24M
24.00 mi14:12:413:14:118:057:58
7:58
#14135
40K
24.85 mi14:19:413:21:118:067:00
8:11
#13995
25.2M
25.20 mi14:22:433:24:138:063:02
8:48
#13917
Finish
26.22 mi14:30:513:32:218:068:08
7:59
#13846
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi17241113051130516180(Top 57%)10886(Top 68%)10886(Top 1704%)
10K6.21 mi3.10 mi16734+50711107+19811107+19816226(Top 57%)10914(Top 68%)10914(Top 1708%)
15K9.32 mi3.11 mi16510+22411022+8511022+8516180(Top 57%)10886(Top 68%)10886(Top 1704%)
20K12.43 mi3.11 mi16467+4311005+1711005+1716364(Top 58%)10898(Top 68%)10898(Top 1705%)
Half13.11 mi0.68 mi16350+11710947+5810947+5813935(Top 49%)9879(Top 61%)9879(Top 1546%)
25K15.53 mi2.42 mi15861+48910725+22210725+22213351(Top 47%)9459(Top 59%)9459(Top 1480%)
30K18.64 mi3.11 mi15023+83810298+42710298+42711682(Top 41%)8520(Top 53%)8520(Top 1333%)
20M20.00 mi1.36 mi14726+29710141+15710141+15711681(Top 41%)8371(Top 52%)8371(Top 1310%)
21M21.00 mi1.00 mi14586+14010052+8910052+8912906(Top 45%)8806(Top 55%)8806(Top 1378%)
35K21.75 mi0.75 mi14478+1089997+559997+5512523(Top 44%)8584(Top 53%)8584(Top 1343%)
23M23.00 mi1.25 mi14313+1659886+1119886+11111815(Top 42%)8152(Top 51%)8152(Top 1276%)
24M24.00 mi1.00 mi14135+1789766+1209766+12011002(Top 39%)7677(Top 48%)7677(Top 1201%)
40K24.85 mi0.85 mi13995+1409675+919675+9111467(Top 40%)7802(Top 48%)7802(Top 1221%)
25.2M25.20 mi0.35 mi13917+789627+489627+4810602(Top 37%)7294(Top 45%)7294(Top 1141%)
Finish26.22 mi1.02 mi13846+719569+589569+5812745(Top 45%)8408(Top 52%)8408(Top 1316%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

16180

Males

10886

M65-69

10886

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16226

Males

10914

M65-69

10914

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

16180

Males

10886

M65-69

10886

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

16364

Males

10898

M65-69

10898

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13935

Males

9879

M65-69

9879

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13351

Males

9459

M65-69

9459

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11682

Males

8520

M65-69

8520

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

11681

Males

8371

M65-69

8371

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

12906

Males

8806

M65-69

8806

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

12523

Males

8584

M65-69

8584

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

11815

Males

8152

M65-69

8152

23M→24M

23.0 - 24.0 mi

Top 39%
×6story building
+12ft-82ft

Overall

11002

Males

7677

M65-69

7677

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11467

Males

7802

M65-69

7802

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

10602

Males

7294

M65-69

7294

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12745

Males

8408

M65-69

8408

Passing Analysis

Category:
Athletes Passed
3982
Passed By
587
Net Change
+3395
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17241
5K → 10K626119+507#17241#16734
10K → 15K32399+224#16734#16510
15K → 20K235192+43#16510#16467
20K → Half1203+117#16467#16350
Half → 25K4967+489#16350#15861
25K → 30K8424+838#15861#15023
30K → 20M31013+297#15023#14726
20M → 21M17939+140#14726#14586
21M → 35K12517+108#14586#14478
35K → 23M19328+165#14478#14313
23M → 24M19113+178#14313#14135
24M → 40K1466+140#14135#13995
40K → 25.2M879+78#13995#13917
25.2M → Finish10938+71#13917#13846
TOTALS3982587+3395
📊

Passing Visuals

Category:
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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