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BOSTON MARATHON 2025

William Delaney

Bib: 1233•M

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 1%
Gender (Male)
#0 / 16105
Top 2%
Division (M18-39)
#0 / 5642
Top 5%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:35
Rank: #1018
Start → 5K
18:35 | 5:59/mi
10K· 6.21 mi
37:02
Rank: #967 (+51)
5K → 10K
18:27 | 5:56/mi
15K· 9.32 mi
55:29
Rank: #929 (+38)
10K → 15K
18:27 | 5:56/mi
20K· 12.43 mi
1:13:43
Rank: #813 (+116)
15K → 20K
18:14 | 5:52/mi
Half· 13.11 mi
1:17:42
Rank: #804 (+9)
20K → Half
3:59 | 5:50/mi
25K· 15.53 mi
1:31:55
Rank: #737 (+67)
Half → 25K
14:13 | 5:52/mi
30K· 18.64 mi
1:50:01
Rank: #592 (+145)
25K → 30K
18:06 | 5:50/mi
20M
1:57:53
Rank: #548 (+44)
30K → 20M
7:52 | 5:47/mi
21M
2:04:03
Rank: #515 (+33)
20M → 21M
6:10 | 6:10/mi
35K· 21.75 mi
2:08:13
Rank: #488 (+27)
21M → 35K
4:10 | 5:34/mi
23M
2:15:28
Rank: #446 (+42)
35K → 23M
7:15 | 5:47/mi
24M
2:21:12
Rank: #423 (+23)
23M → 24M
5:44 | 5:44/mi
40K· 24.85 mi
2:26:09
Rank: #403 (+20)
24M → 40K
4:57 | 5:47/mi
25.2M
2:28:20
Rank: #397 (+6)
40K → 25.2M
2:11 | 6:20/mi
Finish· 26.22 mi
2:34:05
Rank: #379 (+18)
25.2M → Finish
5:45 | 5:39/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:17:42
Pace5:56 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:16:23
Pace5:50 /mi
📊Negative Split: 1.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:0618:355:5918:35
5:59
-
10K
6.21 mi10:37:3337:025:5818:27
5:56
-0:03
15K
9.32 mi10:56:0055:295:5718:27
5:56
0:00
20K
12.43 mi11:14:141:13:435:5618:14
5:52
-0:04
Half
13.11 mi11:18:131:17:425:563:59
5:50
-0:02
25K
15.53 mi11:32:261:31:555:5514:13
5:52
+0:02
30K
18.64 mi11:50:321:50:015:5418:06
5:50
-0:02
20M
20.00 mi11:58:241:57:535:547:52
5:47
-0:03
21M
21.00 mi12:04:342:04:035:546:10
6:10
+0:23
35K
21.75 mi12:08:442:08:135:544:10
5:34
-0:36
23M
23.00 mi12:15:592:15:285:537:15
5:47
+0:13
24M
24.00 mi12:21:432:21:125:535:44
5:44
-0:03
40K
24.85 mi12:26:402:26:095:534:57
5:47
+0:03
25.2M
25.20 mi12:28:512:28:205:532:11
6:20
+0:33
Finish
26.22 mi12:34:362:34:055:535:45
5:39
-0:41

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

5:34 /mi

Average Pace

5:53 /mi

Slowest Pace

6:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:44

95% of race

Time at Steady Pace

8:21

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:53 /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 mi10:19:0618:355:5918:35
5:59
#1018
10K
6.21 mi10:37:3337:025:5818:27
5:56
#967
15K
9.32 mi10:56:0055:295:5718:27
5:56
#929
20K
12.43 mi11:14:141:13:435:5618:14
5:52
#813
Half
13.11 mi11:18:131:17:425:563:59
5:50
#804
25K
15.53 mi11:32:261:31:555:5514:13
5:52
#737
30K
18.64 mi11:50:321:50:015:5418:06
5:50
#592
20M
20.00 mi11:58:241:57:535:547:52
5:47
#548
21M
21.00 mi12:04:342:04:035:546:10
6:10
#515
35K
21.75 mi12:08:442:08:135:544:10
5:34
#488
23M
23.00 mi12:15:592:15:285:537:15
5:47
#446
24M
24.00 mi12:21:432:21:125:535:44
5:44
#423
40K
24.85 mi12:26:402:26:095:534:57
5:47
#403
25.2M
25.20 mi12:28:512:28:205:532:11
6:20
#397
Finish
26.22 mi12:34:362:34:055:535:45
5:39
#379
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1018959959842(Top 3%)790(Top 5%)790(Top 14%)
10K6.21 mi3.10 mi967+51909+50909+50925(Top 3%)871(Top 5%)871(Top 15%)
15K9.32 mi3.11 mi929+38873+36873+36842(Top 3%)790(Top 5%)790(Top 14%)
20K12.43 mi3.11 mi813+116762+111762+111548(Top 2%)505(Top 3%)505(Top 9%)
Half13.11 mi0.68 mi804+9753+9753+9641(Top 2%)598(Top 4%)598(Top 11%)
25K15.53 mi2.42 mi737+67689+64689+64501(Top 2%)467(Top 3%)467(Top 8%)
30K18.64 mi3.11 mi592+145546+143546+143272(Top 1.0%)250(Top 2%)250(Top 4%)
20M20.00 mi1.36 mi548+44503+43503+43179(Top 0.6%)163(Top 1%)163(Top 3%)
21M21.00 mi1.00 mi515+33473+30473+30241(Top 0.8%)224(Top 1%)224(Top 4%)
35K21.75 mi0.75 mi488+27447+26447+26158(Top 0.6%)143(Top 0.9%)143(Top 3%)
23M23.00 mi1.25 mi446+42410+37410+37164(Top 0.6%)153(Top 1.0%)153(Top 3%)
24M24.00 mi1.00 mi423+23390+20390+20211(Top 0.7%)193(Top 1%)193(Top 3%)
40K24.85 mi0.85 mi403+20371+19371+19185(Top 0.7%)172(Top 1%)172(Top 3%)
25.2M25.20 mi0.35 mi397+6366+5366+5244(Top 0.9%)225(Top 1%)225(Top 4%)
Finish26.22 mi1.02 mi379+18349+17349+17285(Top 1%)267(Top 2%)267(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

842

Males

790

M18-39

790

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

925

Males

871

M18-39

871

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

842

Males

790

M18-39

790

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

548

Males

505

M18-39

505

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

641

Males

598

M18-39

598

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

501

Males

467

M18-39

467

25K→30K

15.5 - 18.6 mi

Top 1.0%
×9stories
+181ft-148ft

Overall

272

Males

250

M18-39

250

30K→20M

18.6 - 20.0 mi

Top 0.6%
×5stories
+64ft-50ft

Overall

179

Males

163

M18-39

163

20M→21M

20.0 - 21.0 mi

Top 0.8%
×8stories
+106ft-24ft

Overall

241

Males

224

M18-39

224

21M→35K

21.0 - 21.8 mi

Top 0.6%
×7stories
+17ft-86ft

Overall

158

Males

143

M18-39

143

35K→23M

21.8 - 23.0 mi

Top 0.6%
×5stories
+23ft-63ft

Overall

164

Males

153

M18-39

153

23M→24M

23.0 - 24.0 mi

Top 0.7%
×6stories
+12ft-82ft

Overall

211

Males

193

M18-39

193

24M→40K

24.0 - 24.9 mi

Top 0.7%
×1story
+6ft-20ft

Overall

185

Males

172

M18-39

172

40K→25.2M

24.9 - 25.2 mi

Top 0.9%
×1story
+13ft-16ft

Overall

244

Males

225

M18-39

225

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

285

Males

267

M18-39

267

Passing Analysis

Category:
Athletes Passed
679
Passed By
40
Net Change
+639
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1018
5K → 10K7322+51#1018#967
10K → 15K479+38#967#929
15K → 20K1182+116#929#813
20K → Half101+9#813#804
Half → 25K681+67#804#737
25K → 30K1450+145#737#592
30K → 20M451+44#592#548
20M → 21M330+33#548#515
21M → 35K270+27#515#488
35K → 23M431+42#488#446
23M → 24M230+23#446#423
24M → 40K200+20#423#403
40K → 25.2M60+6#403#397
25.2M → Finish213+18#397#379
TOTALS67940+639
📊

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