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BOSTON MARATHON 2025

Colin Sybing

Bib: 817•M

MD

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 4%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:43
Rank: #430
Start → 5K
17:43 | 5:42/mi
10K· 6.21 mi
35:26
Rank: #442 (-12)
5K → 10K
17:43 | 5:42/mi
15K· 9.32 mi
53:08
Rank: #404 (+38)
10K → 15K
17:42 | 5:42/mi
20K· 12.43 mi
1:11:04
Rank: #401 (+3)
15K → 20K
17:56 | 5:46/mi
Half· 13.11 mi
1:14:57
Rank: #401
20K → Half
3:53 | 5:42/mi
25K· 15.53 mi
1:29:03
Rank: #402 (-1)
Half → 25K
14:06 | 5:49/mi
30K· 18.64 mi
1:47:29
Rank: #389 (+13)
25K → 30K
18:26 | 5:56/mi
20M
1:55:32
Rank: #373 (+16)
30K → 20M
8:03 | 5:55/mi
21M
2:01:44
Rank: #356 (+17)
20M → 21M
6:12 | 6:12/mi
35K· 21.75 mi
2:06:15
Rank: #365 (-9)
21M → 35K
4:31 | 6:02/mi
23M
2:13:52
Rank: #364 (+1)
35K → 23M
7:37 | 6:05/mi
24M
2:19:45
Rank: #348 (+16)
23M → 24M
5:53 | 5:53/mi
40K· 24.85 mi
2:24:43
Rank: #330 (+18)
24M → 40K
4:58 | 5:49/mi
25.2M
2:26:56
Rank: #324 (+6)
40K → 25.2M
2:13 | 6:26/mi
Finish· 26.22 mi
2:32:42
Rank: #306 (+18)
25.2M → Finish
5:46 | 5:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:14:57
Pace5:43 /mi
2nd Half
Distance13.11 mi
Time1:17:45
Pace5:56 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:5117:435:4217:43
5:42
-
10K
6.21 mi10:35:3435:265:4217:43
5:42
0:00
15K
9.32 mi10:53:1653:085:4217:42
5:42
0:00
20K
12.43 mi11:11:121:11:045:4317:56
5:46
+0:04
Half
13.11 mi11:15:051:14:575:433:53
5:42
-0:04
25K
15.53 mi11:29:111:29:035:4414:06
5:49
+0:07
30K
18.64 mi11:47:371:47:295:4618:26
5:56
+0:07
20M
20.00 mi11:55:401:55:325:478:03
5:55
-0:01
21M
21.00 mi12:01:522:01:445:486:12
6:12
+0:17
35K
21.75 mi12:06:232:06:155:484:31
6:02
-0:10
23M
23.00 mi12:14:002:13:525:497:37
6:05
+0:03
24M
24.00 mi12:19:532:19:455:495:53
5:53
-0:12
40K
24.85 mi12:24:512:24:435:494:58
5:49
-0:04
25.2M
25.20 mi12:27:042:26:565:502:13
6:26
+0:37
Finish
26.22 mi12:32:502:32:425:505:46
5:40
-0:46

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

5:40 /mi

Average Pace

5:50 /mi

Slowest Pace

6:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:30:29

99% of race

Time at Steady Pace

2:13

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:49 /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 mi10:17:5117:435:4217:43
5:42
#430
10K
6.21 mi10:35:3435:265:4217:43
5:42
#442
15K
9.32 mi10:53:1653:085:4217:42
5:42
#404
20K
12.43 mi11:11:121:11:045:4317:56
5:46
#401
Half
13.11 mi11:15:051:14:575:433:53
5:42
#401
25K
15.53 mi11:29:111:29:035:4414:06
5:49
#402
30K
18.64 mi11:47:371:47:295:4618:26
5:56
#389
20M
20.00 mi11:55:401:55:325:478:03
5:55
#373
21M
21.00 mi12:01:522:01:445:486:12
6:12
#356
35K
21.75 mi12:06:232:06:155:484:31
6:02
#365
23M
23.00 mi12:14:002:13:525:497:37
6:05
#364
24M
24.00 mi12:19:532:19:455:495:53
5:53
#348
40K
24.85 mi12:24:512:24:435:494:58
5:49
#330
25.2M
25.20 mi12:27:042:26:565:502:13
6:26
#324
Finish
26.22 mi12:32:502:32:425:505:46
5:40
#306
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi430392392380(Top 1%)350(Top 2%)350(Top 6%)
10K6.21 mi3.10 mi442-12405-13405-13448(Top 2%)412(Top 3%)412(Top 7%)
15K9.32 mi3.11 mi404+38373+32373+32380(Top 1%)350(Top 2%)350(Top 6%)
20K12.43 mi3.11 mi401+3369+4369+4403(Top 1%)374(Top 2%)374(Top 7%)
Half13.11 mi0.68 mi401369369402(Top 1%)375(Top 2%)375(Top 7%)
25K15.53 mi2.42 mi402-1370-1370-1434(Top 2%)402(Top 2%)402(Top 7%)
30K18.64 mi3.11 mi389+13358+12358+12399(Top 1%)370(Top 2%)370(Top 7%)
20M20.00 mi1.36 mi373+16343+15343+15293(Top 1%)270(Top 2%)270(Top 5%)
21M21.00 mi1.00 mi356+17326+17326+17263(Top 0.9%)246(Top 2%)246(Top 4%)
35K21.75 mi0.75 mi365-9335-9335-9776(Top 3%)722(Top 4%)722(Top 13%)
23M23.00 mi1.25 mi364+1337-2337-2450(Top 2%)423(Top 3%)423(Top 7%)
24M24.00 mi1.00 mi348+16321+16321+16367(Top 1%)340(Top 2%)340(Top 6%)
40K24.85 mi0.85 mi330+18303+18303+18199(Top 0.7%)184(Top 1%)184(Top 3%)
25.2M25.20 mi0.35 mi324+6297+6297+6345(Top 1%)319(Top 2%)319(Top 6%)
Finish26.22 mi1.02 mi306+18280+17280+17302(Top 1%)282(Top 2%)282(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

380

Males

350

M18-39

350

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

448

Males

412

M18-39

412

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

380

Males

350

M18-39

350

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

403

Males

374

M18-39

374

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

402

Males

375

M18-39

375

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

434

Males

402

M18-39

402

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

399

Males

370

M18-39

370

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

293

Males

270

M18-39

270

20M→21M

20.0 - 21.0 mi

Top 0.9%
×8stories
+106ft-24ft

Overall

263

Males

246

M18-39

246

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

776

Males

722

M18-39

722

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

450

Males

423

M18-39

423

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

367

Males

340

M18-39

340

24M→40K

24.0 - 24.9 mi

Top 0.7%
×1story
+6ft-20ft

Overall

199

Males

184

M18-39

184

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

345

Males

319

M18-39

319

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

302

Males

282

M18-39

282

Passing Analysis

Category:
Athletes Passed
226
Passed By
102
Net Change
+124
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#430
5K → 10K1527-12#430#442
10K → 15K435+38#442#404
15K → 20K1916+3#404#401
20K → Half550#401#401
Half → 25K1213-1#401#402
25K → 30K218+13#402#389
30K → 20M193+16#389#373
20M → 21M192+17#373#356
21M → 35K110-9#356#365
35K → 23M1110+1#365#364
23M → 24M160+16#364#348
24M → 40K191+18#348#330
40K → 25.2M71+6#330#324
25.2M → Finish191+18#324#306
TOTALS226102+124
📊

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