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BOSTON MARATHON 2025

Nathan Williams

Bib: 1945•M

CA

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 6%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:06
Rank: #660
Start → 5K
18:06 | 5:50/mi
10K· 6.21 mi
36:02
Rank: #603 (+57)
5K → 10K
17:56 | 5:46/mi
15K· 9.32 mi
54:17
Rank: #613 (-10)
10K → 15K
18:15 | 5:52/mi
20K· 12.43 mi
1:12:33
Rank: #593 (+20)
15K → 20K
18:16 | 5:53/mi
Half· 13.11 mi
1:16:28
Rank: #585 (+8)
20K → Half
3:55 | 5:44/mi
25K· 15.53 mi
1:30:59
Rank: #595 (-10)
Half → 25K
14:31 | 5:59/mi
30K· 18.64 mi
1:49:25
Rank: #540 (+55)
25K → 30K
18:26 | 5:56/mi
20M
1:57:38
Rank: #522 (+18)
30K → 20M
8:13 | 6:03/mi
21M
2:04:03
Rank: #517 (+5)
20M → 21M
6:25 | 6:25/mi
35K· 21.75 mi
2:08:21
Rank: #499 (+18)
21M → 35K
4:18 | 5:45/mi
23M
2:15:53
Rank: #476 (+23)
35K → 23M
7:32 | 6:01/mi
24M
2:21:45
Rank: #463 (+13)
23M → 24M
5:52 | 5:52/mi
40K· 24.85 mi
2:26:46
Rank: #444 (+19)
24M → 40K
5:01 | 5:52/mi
25.2M
2:28:54
Rank: #429 (+15)
40K → 25.2M
2:08 | 6:11/mi
Finish· 26.22 mi
2:34:29
Rank: #402 (+27)
25.2M → Finish
5:35 | 5:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:16:28
Pace5:50 /mi
2nd Half
Distance13.11 mi
Time1:18:01
Pace5:57 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:3218:065:5018:06
5:50
-
10K
6.21 mi10:36:2836:025:4817:56
5:46
-0:04
15K
9.32 mi10:54:4354:175:4918:15
5:52
+0:06
20K
12.43 mi11:12:591:12:335:5018:16
5:53
+0:01
Half
13.11 mi11:16:541:16:285:503:55
5:44
-0:09
25K
15.53 mi11:31:251:30:595:5114:31
5:59
+0:15
30K
18.64 mi11:49:511:49:255:5218:26
5:56
-0:03
20M
20.00 mi11:58:041:57:385:538:13
6:03
+0:07
21M
21.00 mi12:04:292:04:035:546:25
6:25
+0:22
35K
21.75 mi12:08:472:08:215:544:18
5:45
-0:40
23M
23.00 mi12:16:192:15:535:547:32
6:01
+0:16
24M
24.00 mi12:22:112:21:455:545:52
5:52
-0:09
40K
24.85 mi12:27:122:26:465:545:01
5:52
0:00
25.2M
25.20 mi12:29:202:28:545:552:08
6:11
+0:19
Finish
26.22 mi12:34:552:34:295:545:35
5:29
-0:42

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

5:29 /mi

Average Pace

5:54 /mi

Slowest Pace

6:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:43

89% of race

Time at Steady Pace

16:46

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:54 /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 mi10:18:3218:065:5018:06
5:50
#660
10K
6.21 mi10:36:2836:025:4817:56
5:46
#603
15K
9.32 mi10:54:4354:175:4918:15
5:52
#613
20K
12.43 mi11:12:591:12:335:5018:16
5:53
#593
Half
13.11 mi11:16:541:16:285:503:55
5:44
#585
25K
15.53 mi11:31:251:30:595:5114:31
5:59
#595
30K
18.64 mi11:49:511:49:255:5218:26
5:56
#540
20M
20.00 mi11:58:041:57:385:538:13
6:03
#522
21M
21.00 mi12:04:292:04:035:546:25
6:25
#517
35K
21.75 mi12:08:472:08:215:544:18
5:45
#499
23M
23.00 mi12:16:192:15:535:547:32
6:01
#476
24M
24.00 mi12:22:112:21:455:545:52
5:52
#463
40K
24.85 mi12:27:122:26:465:545:01
5:52
#444
25.2M
25.20 mi12:29:202:28:545:552:08
6:11
#429
Finish
26.22 mi12:34:552:34:295:545:35
5:29
#402
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi660613613690(Top 2%)644(Top 4%)644(Top 11%)
10K6.21 mi3.10 mi603+57557+56557+56553(Top 2%)515(Top 3%)515(Top 9%)
15K9.32 mi3.11 mi613-10568-11568-11690(Top 2%)644(Top 4%)644(Top 11%)
20K12.43 mi3.11 mi593+20549+19549+19569(Top 2%)525(Top 3%)525(Top 9%)
Half13.11 mi0.68 mi585+8541+8541+8470(Top 2%)440(Top 3%)440(Top 8%)
25K15.53 mi2.42 mi595-10550-9550-9751(Top 3%)703(Top 4%)703(Top 12%)
30K18.64 mi3.11 mi540+55495+55495+55400(Top 1%)371(Top 2%)371(Top 7%)
20M20.00 mi1.36 mi522+18477+18477+18443(Top 2%)414(Top 3%)414(Top 7%)
21M21.00 mi1.00 mi517+5475+2475+2532(Top 2%)502(Top 3%)502(Top 9%)
35K21.75 mi0.75 mi499+18457+18457+18324(Top 1%)302(Top 2%)302(Top 5%)
23M23.00 mi1.25 mi476+23437+20437+20360(Top 1%)338(Top 2%)338(Top 6%)
24M24.00 mi1.00 mi463+13425+12425+12341(Top 1%)315(Top 2%)315(Top 6%)
40K24.85 mi0.85 mi444+19409+16409+16250(Top 0.9%)230(Top 1%)230(Top 4%)
25.2M25.20 mi0.35 mi429+15395+14395+14152(Top 0.5%)144(Top 0.9%)144(Top 3%)
Finish26.22 mi1.02 mi402+27371+24371+24141(Top 0.5%)135(Top 0.8%)135(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

690

Males

644

M18-39

644

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

553

Males

515

M18-39

515

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

690

Males

644

M18-39

644

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

569

Males

525

M18-39

525

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

470

Males

440

M18-39

440

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

751

Males

703

M18-39

703

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

400

Males

371

M18-39

371

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

443

Males

414

M18-39

414

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

532

Males

502

M18-39

502

21M→35K

21.0 - 21.8 mi

Top 1%
×7stories
+17ft-86ft

Overall

324

Males

302

M18-39

302

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

360

Males

338

M18-39

338

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

341

Males

315

M18-39

315

24M→40K

24.0 - 24.9 mi

Top 0.9%
×1story
+6ft-20ft

Overall

250

Males

230

M18-39

230

40K→25.2M

24.9 - 25.2 mi

Top 0.5%
×1story
+13ft-16ft

Overall

152

Males

144

M18-39

144

25.2M→Finish

25.2 - 26.2 mi

Top 0.5%
×2stories
+22ft-21ft

Overall

141

Males

135

M18-39

135

Passing Analysis

Category:
Athletes Passed
352
Passed By
94
Net Change
+258
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#660
5K → 10K669+57#660#603
10K → 15K1222-10#603#613
15K → 20K3111+20#613#593
20K → Half80+8#593#585
Half → 25K1525-10#585#595
25K → 30K616+55#595#540
30K → 20M202+18#540#522
20M → 21M1510+5#522#517
21M → 35K191+18#517#499
35K → 23M285+23#499#476
23M → 24M152+13#476#463
24M → 40K201+19#463#444
40K → 25.2M150+15#444#429
25.2M → Finish270+27#429#402
TOTALS35294+258
📊

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