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BOSTON MARATHON 2025

Thomas Shaw

Bib: 1418•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 0.9%
Gender (Male)
#0 / 16105
Top 1%
Division (M18-39)
#0 / 5642
Top 4%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:59
Rank: #584
Start → 5K
17:59 | 5:47/mi
10K· 6.21 mi
35:17
Rank: #401 (+183)
5K → 10K
17:18 | 5:34/mi
15K· 9.32 mi
52:52
Rank: #361 (+40)
10K → 15K
17:35 | 5:40/mi
20K· 12.43 mi
1:10:32
Rank: #346 (+15)
15K → 20K
17:40 | 5:41/mi
Half· 13.11 mi
1:14:22
Rank: #343 (+3)
20K → Half
3:50 | 5:37/mi
25K· 15.53 mi
1:28:20
Rank: #339 (+4)
Half → 25K
13:58 | 5:46/mi
30K· 18.64 mi
1:46:15
Rank: #306 (+33)
25K → 30K
17:55 | 5:46/mi
20M
1:54:19
Rank: #295 (+11)
30K → 20M
8:04 | 5:56/mi
21M
2:00:30
Rank: #279 (+16)
20M → 21M
6:11 | 6:11/mi
35K· 21.75 mi
2:04:48
Rank: #274 (+5)
21M → 35K
4:18 | 5:45/mi
23M
2:12:15
Rank: #265 (+9)
35K → 23M
7:27 | 5:57/mi
24M
2:18:01
Rank: #256 (+9)
23M → 24M
5:46 | 5:46/mi
40K· 24.85 mi
2:23:09
Rank: #254 (+2)
24M → 40K
5:08 | 6:00/mi
25.2M
2:25:27
Rank: #252 (+2)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:31:30
Rank: #258 (-6)
25.2M → Finish
6:03 | 5:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:14:22
Pace5:40 /mi
2nd Half
Distance13.11 mi
Time1:17:08
Pace5:53 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:2117:595:4717:59
5:47
-
10K
6.21 mi10:35:3935:175:4117:18
5:34
-0:13
15K
9.32 mi10:53:1452:525:4017:35
5:40
+0:06
20K
12.43 mi11:10:541:10:325:4117:40
5:41
+0:01
Half
13.11 mi11:14:441:14:225:403:50
5:37
-0:04
25K
15.53 mi11:28:421:28:205:4113:58
5:46
+0:09
30K
18.64 mi11:46:371:46:155:4217:55
5:46
0:00
20M
20.00 mi11:54:411:54:195:438:04
5:56
+0:10
21M
21.00 mi12:00:522:00:305:446:11
6:11
+0:15
35K
21.75 mi12:05:102:04:485:444:18
5:45
-0:26
23M
23.00 mi12:12:372:12:155:457:27
5:57
+0:12
24M
24.00 mi12:18:232:18:015:455:46
5:46
-0:11
40K
24.85 mi12:23:312:23:095:465:08
6:00
+0:14
25.2M
25.20 mi12:25:492:25:275:462:18
6:40
+0:40
Finish
26.22 mi12:31:522:31:305:476:03
5:56
-0:44

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

5:47 /mi

Slowest Pace

6:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:01

94% of race

Time at Steady Pace

6:11

4% of race

Time at Slower Pace

2:18

2% of race

Average Pace: 5:47 /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 mi10:18:2117:595:4717:59
5:47
#584
10K
6.21 mi10:35:3935:175:4117:18
5:34
#401
15K
9.32 mi10:53:1452:525:4017:35
5:40
#361
20K
12.43 mi11:10:541:10:325:4117:40
5:41
#346
Half
13.11 mi11:14:441:14:225:403:50
5:37
#343
25K
15.53 mi11:28:421:28:205:4113:58
5:46
#339
30K
18.64 mi11:46:371:46:155:4217:55
5:46
#306
20M
20.00 mi11:54:411:54:195:438:04
5:56
#295
21M
21.00 mi12:00:522:00:305:446:11
6:11
#279
35K
21.75 mi12:05:102:04:485:444:18
5:45
#274
23M
23.00 mi12:12:372:12:155:457:27
5:57
#265
24M
24.00 mi12:18:232:18:015:455:46
5:46
#256
40K
24.85 mi12:23:312:23:095:465:08
6:00
#254
25.2M
25.20 mi12:25:492:25:275:462:18
6:40
#252
Finish
26.22 mi12:31:522:31:305:476:03
5:56
#258
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi584540540318(Top 1%)290(Top 2%)290(Top 5%)
10K6.21 mi3.10 mi401+183368+172368+172274(Top 1.0%)245(Top 2%)245(Top 4%)
15K9.32 mi3.11 mi361+40331+37331+37318(Top 1%)290(Top 2%)290(Top 5%)
20K12.43 mi3.11 mi346+15317+14317+14297(Top 1%)270(Top 2%)270(Top 5%)
Half13.11 mi0.68 mi343+3314+3314+3320(Top 1%)294(Top 2%)294(Top 5%)
25K15.53 mi2.42 mi339+4311+3311+3358(Top 1%)332(Top 2%)332(Top 6%)
30K18.64 mi3.11 mi306+33278+33278+33221(Top 0.8%)199(Top 1%)199(Top 4%)
20M20.00 mi1.36 mi295+11268+10268+10306(Top 1%)282(Top 2%)282(Top 5%)
21M21.00 mi1.00 mi279+16253+15253+15249(Top 0.9%)232(Top 1%)232(Top 4%)
35K21.75 mi0.75 mi274+5250+3250+3313(Top 1%)291(Top 2%)291(Top 5%)
23M23.00 mi1.25 mi265+9242+8242+8283(Top 1.0%)263(Top 2%)263(Top 5%)
24M24.00 mi1.00 mi256+9233+9233+9244(Top 0.9%)223(Top 1%)223(Top 4%)
40K24.85 mi0.85 mi254+2231+2231+2386(Top 1%)358(Top 2%)358(Top 6%)
25.2M25.20 mi0.35 mi252+2229+2229+2677(Top 2%)627(Top 4%)627(Top 11%)
Finish26.22 mi1.02 mi258-6235-6235-6758(Top 3%)712(Top 4%)712(Top 13%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

318

Males

290

M18-39

290

5K→10K

3.1 - 6.2 mi

Top 1.0%
×5stories
+79ft-138ft

Overall

274

Males

245

M18-39

245

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

318

Males

290

M18-39

290

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

297

Males

270

M18-39

270

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

320

Males

294

M18-39

294

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

358

Males

332

M18-39

332

25K→30K

15.5 - 18.6 mi

Top 0.8%
×9stories
+181ft-148ft

Overall

221

Males

199

M18-39

199

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

306

Males

282

M18-39

282

20M→21M

20.0 - 21.0 mi

Top 0.9%
×8stories
+106ft-24ft

Overall

249

Males

232

M18-39

232

21M→35K

21.0 - 21.8 mi

Top 1%
×7stories
+17ft-86ft

Overall

313

Males

291

M18-39

291

35K→23M

21.8 - 23.0 mi

Top 1.0%
×5stories
+23ft-63ft

Overall

283

Males

263

M18-39

263

23M→24M

23.0 - 24.0 mi

Top 0.9%
×6stories
+12ft-82ft

Overall

244

Males

223

M18-39

223

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

386

Males

358

M18-39

358

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

677

Males

627

M18-39

627

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

758

Males

712

M18-39

712

Passing Analysis

Category:
Athletes Passed
370
Passed By
44
Net Change
+326
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#584
5K → 10K1841+183#584#401
10K → 15K433+40#401#361
15K → 20K227+15#361#346
20K → Half41+3#346#343
Half → 25K117+4#343#339
25K → 30K363+33#339#306
30K → 20M121+11#306#295
20M → 21M204+16#295#279
21M → 35K61+5#279#274
35K → 23M112+9#274#265
23M → 24M101+9#265#256
24M → 40K53+2#256#254
40K → 25.2M31+2#254#252
25.2M → Finish39-6#252#258
TOTALS37044+326
📊

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