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BOSTON MARATHON 2025

Clay Sheaffer

Bib: 2766•M

PA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 6%
Gender (Male)
#0 / 16105
Top 10%
Division (M18-39)
#0 / 5642
Top 24%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:13
Rank: #1784
Start → 5K
6:11/mi
19:13 split
10K· 6.21 mi
38:16
Rank: #1671 (+113)
5K → 10K
6:08/mi
19:03 split
15K· 9.32 mi
57:14
Rank: #1576 (+95)
10K → 15K
6:06/mi
18:58 split
20K· 12.43 mi
1:16:16
Rank: #1483 (+93)
15K → 20K
6:08/mi
19:02 split
Half· 13.11 mi
1:20:22
Rank: #1465 (+18)
20K → Half
6:01/mi
4:06 split
25K· 15.53 mi
1:35:15
Rank: #1399 (+66)
Half → 25K
6:08/mi
14:53 split
30K· 18.64 mi
1:54:57
Rank: #1355 (+44)
25K → 30K
6:20/mi
19:42 split
20M
2:03:48
Rank: #1352 (+3)
30K → 20M
6:31/mi
8:51 split
21M
2:10:47
Rank: #1361 (-9)
20M → 21M
6:59/mi
6:59 split
35K· 21.75 mi
2:15:37
Rank: #1371 (-10)
21M → 35K
6:28/mi
4:50 split
23M
2:24:17
Rank: #1449 (-78)
35K → 23M
6:55/mi
8:40 split
24M
2:31:08
Rank: #1499 (-50)
23M → 24M
6:51/mi
6:51 split
40K· 24.85 mi
2:37:18
Rank: #1581 (-82)
24M → 40K
7:13/mi
6:10 split
25.2M
2:39:55
Rank: #1600 (-19)
40K → 25.2M
7:35/mi
2:37 split
Finish· 26.22 mi
2:46:45
Rank: #1674 (-74)
25.2M → Finish
6:42/mi
6:50 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:20:22
Pace6:08 /mi
2nd Half
Distance13.11 mi
Time1:26:23
Pace6:35 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:2619:136:1119:13
6:11
-
10K
6.21 mi10:39:2938:166:1019:03
6:08
-0:03
15K
9.32 mi10:58:2757:146:0818:58
6:06
-0:02
20K
12.43 mi11:17:291:16:166:0819:02
6:08
+0:02
Half
13.11 mi11:21:351:20:226:084:06
6:01
-0:07
25K
15.53 mi11:36:281:35:156:0814:53
6:08
+0:07
30K
18.64 mi11:56:101:54:576:1019:42
6:20
+0:12
20M
20.00 mi12:05:012:03:486:118:51
6:31
+0:11
21M
21.00 mi12:12:002:10:476:146:59
6:59
+0:28
35K
21.75 mi12:16:502:15:376:144:50
6:28
-0:31
23M
23.00 mi12:25:302:24:176:168:40
6:55
+0:27
24M
24.00 mi12:32:212:31:086:186:51
6:51
-0:04
40K
24.85 mi12:38:312:37:186:206:10
7:13
+0:22
25.2M
25.20 mi12:41:082:39:556:212:37
7:35
+0:22
Finish
26.22 mi12:47:582:46:456:226:50
6:42
-0:53

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

6:01 /mi

Average Pace

6:22 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:35:15

57% of race

Time at Steady Pace

33:23

20% of race

Time at Slower Pace

38:07

23% of race

Average Pace: 6:22 /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 mi10:20:2619:136:1119:13
6:11
#1784
10K
6.21 mi10:39:2938:166:1019:03
6:08
#1671
15K
9.32 mi10:58:2757:146:0818:58
6:06
#1576
20K
12.43 mi11:17:291:16:166:0819:02
6:08
#1483
Half
13.11 mi11:21:351:20:226:084:06
6:01
#1465
25K
15.53 mi11:36:281:35:156:0814:53
6:08
#1399
30K
18.64 mi11:56:101:54:576:1019:42
6:20
#1355
20M
20.00 mi12:05:012:03:486:118:51
6:31
#1352
21M
21.00 mi12:12:002:10:476:146:59
6:59
#1361
35K
21.75 mi12:16:502:15:376:144:50
6:28
#1371
23M
23.00 mi12:25:302:24:176:168:40
6:55
#1449
24M
24.00 mi12:32:212:31:086:186:51
6:51
#1499
40K
24.85 mi12:38:312:37:186:206:10
7:13
#1581
25.2M
25.20 mi12:41:082:39:556:212:37
7:35
#1600
Finish
26.22 mi12:47:582:46:456:226:50
6:42
#1674
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1784169516951414(Top 5%)1346(Top 8%)1346(Top 24%)
10K6.21 mi3.10 mi1671+1131590+1051590+1051598(Top 6%)1521(Top 9%)1521(Top 27%)
15K9.32 mi3.11 mi1576+951499+911499+911414(Top 5%)1346(Top 8%)1346(Top 24%)
20K12.43 mi3.11 mi1483+931408+911408+911270(Top 4%)1204(Top 7%)1204(Top 21%)
Half13.11 mi0.68 mi1465+181390+181390+181212(Top 4%)1149(Top 7%)1149(Top 20%)
25K15.53 mi2.42 mi1399+661327+631327+631251(Top 4%)1184(Top 7%)1184(Top 21%)
30K18.64 mi3.11 mi1355+441280+471280+471339(Top 5%)1266(Top 8%)1266(Top 22%)
20M20.00 mi1.36 mi1352+31276+41276+41681(Top 6%)1589(Top 10%)1589(Top 28%)
21M21.00 mi1.00 mi1361-91284-81284-82204(Top 8%)2060(Top 13%)2060(Top 37%)
35K21.75 mi0.75 mi1371-101293-91293-92280(Top 8%)2132(Top 13%)2132(Top 38%)
23M23.00 mi1.25 mi1449-781368-751368-753337(Top 12%)3035(Top 19%)3035(Top 54%)
24M24.00 mi1.00 mi1499-501418-501418-503807(Top 13%)3381(Top 21%)3381(Top 60%)
40K24.85 mi0.85 mi1581-821496-781496-785109(Top 18%)4280(Top 27%)4280(Top 76%)
25.2M25.20 mi0.35 mi1600-191514-181514-183813(Top 13%)3295(Top 20%)3295(Top 58%)
Finish26.22 mi1.02 mi1674-741584-701584-703901(Top 14%)3366(Top 21%)3366(Top 60%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21story building
+97ft-345ft

Overall

1414

Males

1346

M18-39

1346

5K→10K

3.1 - 6.2 mi

Top 6%
×5story building
+79ft-138ft

Overall

1598

Males

1521

M18-39

1521

10K→15K

6.2 - 9.3 mi

Top 5%
×3story building
+67ft-78ft

Overall

1414

Males

1346

M18-39

1346

15K→20K

9.3 - 12.4 mi

Top 4%
×5story building
+106ft-86ft

Overall

1270

Males

1204

M18-39

1204

20K→Half

12.4 - 13.1 mi

Top 4%
×2story building
+19ft-37ft

Overall

1212

Males

1149

M18-39

1149

Half→25K

13.1 - 15.5 mi

Top 4%
×4story building
+66ft-88ft

Overall

1251

Males

1184

M18-39

1184

25K→30K

15.5 - 18.6 mi

Top 5%
×9story building
+181ft-148ft

Overall

1339

Males

1266

M18-39

1266

30K→20M

18.6 - 20.0 mi

Top 6%
×5story building
+64ft-50ft

Overall

1681

Males

1589

M18-39

1589

20M→21M

20.0 - 21.0 mi

Top 8%
×8story building
+106ft-24ft

Overall

2204

Males

2060

M18-39

2060

21M→35K

21.0 - 21.8 mi

Top 8%
×7story building
+17ft-86ft

Overall

2280

Males

2132

M18-39

2132

35K→23M

21.8 - 23.0 mi

Top 12%
×5story building
+23ft-63ft

Overall

3337

Males

3035

M18-39

3035

23M→24M

23.0 - 24.0 mi

Top 13%
×6story building
+12ft-82ft

Overall

3807

Males

3381

M18-39

3381

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5109

Males

4280

M18-39

4280

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3813

Males

3295

M18-39

3295

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2story building
+22ft-21ft

Overall

3901

Males

3366

M18-39

3366

Passing Analysis

Category:
Athletes Passed
656
Passed By
546
Net Change
+110
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1784
5K → 10K14734+113#1784#1671
10K → 15K11419+95#1671#1576
15K → 20K1029+93#1576#1483
20K → Half202+18#1483#1465
Half → 25K7610+66#1465#1399
25K → 30K6925+44#1399#1355
30K → 20M3734+3#1355#1352
20M → 21M2332-9#1352#1361
21M → 35K1424-10#1361#1371
35K → 23M1593-78#1371#1449
23M → 24M1666-50#1449#1499
24M → 40K890-82#1499#1581
40K → 25.2M524-19#1581#1600
25.2M → Finish1084-74#1600#1674
TOTALS656546+110
📊

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