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BOSTON MARATHON 2025

Daniel Buckelew

Bib: P138•M

MA

0:00
0:00
/ mi
Masters
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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

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
10:08/mi
31:30
↑ 97↓ 3451.5%
10K· 6.21 mi
10:10/mi
1:03:05
↑ 79↓ 1380.4%
15K· 9.32 mi
9:53/mi
1:33:48
↑ 67↓ 78
20K· 12.43 mi
9:35/mi
2:03:35
↑ 106↓ 860.1%
Half· 13.11 mi
9:16/mi
2:09:54
↑ 19↓ 370.5%
25K· 15.53 mi
9:39/mi
2:33:19
↑ 66↓ 880.2%
30K· 18.64 mi
10:11/mi
3:04:57
↑ 181↓ 1480.2%
20M
10:19/mi
3:18:58
↑ 64↓ 500.2%
21M
11:08/mi
3:30:06
↑ 106↓ 241.6%
35K· 21.75 mi
9:40/mi
3:37:20
↑ 17↓ 861.7%
23M
9:53/mi
3:49:42
↑ 23↓ 630.6%
24M
10:14/mi
3:59:56
↓ 821.3%
40K· 24.85 mi
9:53/mi
4:08:23
↓ 200.3%
25.2M
11:36/mi
4:12:23
↑ 13↓ 160.2%
Finish· 26.22 mi
9:38/mi
4:22:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:09:54
Pace9:55 /mi
2nd Half
Distance13.11 mi
Time2:12:18
Pace10:06 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3331:3010:0831:30
10:08
-
10K
6.21 mi10:53:081:03:0510:0931:35
10:10
+0:02
15K
9.32 mi11:23:511:33:4810:0430:43
9:53
-0:17
20K
12.43 mi11:53:382:03:359:5729:47
9:35
-0:18
Half
13.11 mi11:59:572:09:549:556:19
9:16
-0:19
25K
15.53 mi12:23:222:33:199:5223:25
9:39
+0:23
30K
18.64 mi12:55:003:04:579:5531:38
10:11
+0:32
20M
20.00 mi13:09:013:18:589:5714:01
10:19
+0:08
21M
21.00 mi13:20:093:30:0610:0011:08
11:08
+0:49
35K
21.75 mi13:27:233:37:2010:007:14
9:40
-1:28
23M
23.00 mi13:39:453:49:429:5912:22
9:53
+0:13
24M
24.00 mi13:49:593:59:5610:0010:14
10:14
+0:21
40K
24.85 mi13:58:264:08:2310:008:27
9:53
-0:21
25.2M
25.20 mi14:02:264:12:2310:014:00
11:36
+1:43
Finish
26.22 mi14:12:154:22:1210:009:49
9:38
-1:58

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

9:16 /mi

Average Pace

10:00 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

36:06

14% of race

Time at Steady Pace

2:35:05

59% of race

Time at Slower Pace

1:11:01

27% of race

Average Pace: 10:00 /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 mi10:21:3331:3010:0831:30
10:08
#25924
10K
6.21 mi10:53:081:03:0510:0931:35
10:10
#25778
15K
9.32 mi11:23:511:33:4810:0430:43
9:53
#25447
20K
12.43 mi11:53:382:03:359:5729:47
9:35
#24868
Half
13.11 mi11:59:572:09:549:556:19
9:16
#24770
25K
15.53 mi12:23:222:33:199:5223:25
9:39
#24420
30K
18.64 mi12:55:003:04:579:5531:38
10:11
#24029
20M
20.00 mi13:09:013:18:589:5714:01
10:19
#23873
21M
21.00 mi13:20:093:30:0610:0011:08
11:08
#23745
35K
21.75 mi13:27:233:37:2010:007:14
9:40
#23641
23M
23.00 mi13:39:453:49:429:5912:22
9:53
#23435
24M
24.00 mi13:49:593:59:5610:0010:14
10:14
#23380
40K
24.85 mi13:58:264:08:2310:008:27
9:53
#23246
25.2M
25.20 mi14:02:264:12:2310:014:00
11:36
#23230
Finish
26.22 mi14:12:154:22:1210:009:49
9:38
#23190
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi25924151371513724741(Top 87%)14596(Top 91%)14596(Top 650%)
10K6.21 mi3.10 mi25778+14615063+7415063+7425665(Top 90%)14986(Top 93%)14986(Top 667%)
15K9.32 mi3.11 mi25447+33114917+14614917+14624741(Top 87%)14596(Top 91%)14596(Top 650%)
20K12.43 mi3.11 mi24868+57914646+27114646+27123164(Top 82%)13873(Top 86%)13873(Top 617%)
Half13.11 mi0.68 mi24770+9814600+4614600+4622802(Top 80%)13706(Top 85%)13706(Top 610%)
25K15.53 mi2.42 mi24420+35014419+18114419+18122380(Top 79%)13458(Top 84%)13458(Top 599%)
30K18.64 mi3.11 mi24029+39114223+19614223+19622143(Top 78%)13241(Top 82%)13241(Top 589%)
20M20.00 mi1.36 mi23873+15614133+9014133+9021907(Top 77%)13017(Top 81%)13017(Top 579%)
21M21.00 mi1.00 mi23745+12814053+8014053+8021733(Top 77%)12854(Top 80%)12854(Top 572%)
35K21.75 mi0.75 mi23641+10413997+5613997+5620897(Top 74%)12402(Top 77%)12402(Top 552%)
23M23.00 mi1.25 mi23435+20613877+12013877+12020070(Top 71%)11938(Top 74%)11938(Top 531%)
24M24.00 mi1.00 mi23380+5513838+3913838+3922032(Top 78%)12829(Top 80%)12829(Top 571%)
40K24.85 mi0.85 mi23246+13413752+8613752+8620073(Top 71%)11830(Top 73%)11830(Top 526%)
25.2M25.20 mi0.35 mi23230+1613739+1313739+1322293(Top 78%)12943(Top 80%)12943(Top 576%)
Finish26.22 mi1.02 mi23190+4013708+3113708+3121665(Top 76%)12619(Top 78%)12619(Top 562%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

24741

Males

14596

M40-44

14596

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

25665

Males

14986

M40-44

14986

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

24741

Males

14596

M40-44

14596

15K→20K

9.3 - 12.4 mi

Top 82%
×5story building
+106ft-86ft

Overall

23164

Males

13873

M40-44

13873

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

22802

Males

13706

M40-44

13706

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

22380

Males

13458

M40-44

13458

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22143

Males

13241

M40-44

13241

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

21907

Males

13017

M40-44

13017

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

21733

Males

12854

M40-44

12854

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

20897

Males

12402

M40-44

12402

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

20070

Males

11938

M40-44

11938

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

22032

Males

12829

M40-44

12829

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

20073

Males

11830

M40-44

11830

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22293

Males

12943

M40-44

12943

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

21665

Males

12619

M40-44

12619

Passing Analysis

Category:
Athletes Passed
2986
Passed By
252
Net Change
+2734
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25924
5K → 10K271125+146#25924#25778
10K → 15K35019+331#25778#25447
15K → 20K5801+579#25447#24868
20K → Half980+98#24868#24770
Half → 25K3500+350#24770#24420
25K → 30K41322+391#24420#24029
30K → 20M16711+156#24029#23873
20M → 21M15325+128#23873#23745
21M → 35K1051+104#23745#23641
35K → 23M2115+206#23641#23435
23M → 24M7419+55#23435#23380
24M → 40K1351+134#23380#23246
40K → 25.2M237+16#23246#23230
25.2M → Finish5616+40#23230#23190
TOTALS2986252+2734
📊

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