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BOSTON MARATHON 2025

Colin Brearley

Bib: 32178•M

NJ

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:29
Rank: #20015
Start → 5K
26:29 | 8:31/mi
10K· 6.21 mi
53:00
Rank: #20007 (+8)
5K → 10K
26:31 | 8:32/mi
15K· 9.32 mi
1:19:30
Rank: #19855 (+152)
10K → 15K
26:30 | 8:32/mi
20K· 12.43 mi
1:46:49
Rank: #19846 (+9)
15K → 20K
27:19 | 8:48/mi
Half· 13.11 mi
1:52:26
Rank: #19736 (+110)
20K → Half
5:37 | 8:14/mi
25K· 15.53 mi
2:13:21
Rank: #19417 (+319)
Half → 25K
20:55 | 8:38/mi
30K· 18.64 mi
2:41:40
Rank: #19184 (+233)
25K → 30K
28:19 | 9:07/mi
20M
2:54:14
Rank: #19079 (+105)
30K → 20M
12:34 | 9:15/mi
21M
3:04:16
Rank: #19038 (+41)
20M → 21M
10:02 | 10:02/mi
35K· 21.75 mi
3:11:03
Rank: #19019 (+19)
21M → 35K
6:47 | 9:04/mi
23M
3:22:34
Rank: #18910 (+109)
35K → 23M
11:31 | 9:12/mi
24M
3:31:38
Rank: #18862 (+48)
23M → 24M
9:04 | 9:04/mi
40K· 24.85 mi
3:39:16
Rank: #18754 (+108)
24M → 40K
7:38 | 8:56/mi
25.2M
3:42:33
Rank: #18675 (+79)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
3:51:04
Rank: #18554 (+121)
25.2M → Finish
8:31 | 8:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:26
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time1:58:38
Pace9:03 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5526:298:3126:29
8:31
-
10K
6.21 mi12:17:2653:008:3226:31
8:32
+0:01
15K
9.32 mi12:43:561:19:308:3226:30
8:32
0:00
20K
12.43 mi13:11:151:46:498:3627:19
8:48
+0:16
Half
13.11 mi13:16:521:52:268:355:37
8:14
-0:34
25K
15.53 mi13:37:472:13:218:3520:55
8:38
+0:24
30K
18.64 mi14:06:062:41:408:4028:19
9:07
+0:29
20M
20.00 mi14:18:402:54:148:4312:34
9:15
+0:08
21M
21.00 mi14:28:423:04:168:4610:02
10:02
+0:47
35K
21.75 mi14:35:293:11:038:476:47
9:04
-0:58
23M
23.00 mi14:47:003:22:348:4811:31
9:12
+0:08
24M
24.00 mi14:56:043:31:388:499:04
9:04
-0:08
40K
24.85 mi15:03:423:39:168:497:38
8:56
-0:08
25.2M
25.20 mi15:06:593:42:338:503:17
9:31
+0:35
Finish
26.22 mi15:15:303:51:048:498:31
8:21
-1:10

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

8:14 /mi

Average Pace

8:49 /mi

Slowest Pace

10:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:33

50% of race

Time at Steady Pace

1:19:07

34% of race

Time at Slower Pace

37:24

16% of race

Average Pace: 8:49 /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 mi11:50:5526:298:3126:29
8:31
#20015
10K
6.21 mi12:17:2653:008:3226:31
8:32
#20007
15K
9.32 mi12:43:561:19:308:3226:30
8:32
#19855
20K
12.43 mi13:11:151:46:498:3627:19
8:48
#19846
Half
13.11 mi13:16:521:52:268:355:37
8:14
#19736
25K
15.53 mi13:37:472:13:218:3520:55
8:38
#19417
30K
18.64 mi14:06:062:41:408:4028:19
9:07
#19184
20M
20.00 mi14:18:402:54:148:4312:34
9:15
#19079
21M
21.00 mi14:28:423:04:168:4610:02
10:02
#19038
35K
21.75 mi14:35:293:11:038:476:47
9:04
#19019
23M
23.00 mi14:47:003:22:348:4811:31
9:12
#18910
24M
24.00 mi14:56:043:31:388:499:04
9:04
#18862
40K
24.85 mi15:03:423:39:168:497:38
8:56
#18754
25.2M
25.20 mi15:06:593:42:338:503:17
9:31
#18675
Finish
26.22 mi15:15:303:51:048:498:31
8:21
#18554
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20015124471244719498(Top 69%)12274(Top 76%)12274(Top 218%)
10K6.21 mi3.10 mi20007+812476-2912476-2919991(Top 70%)12475(Top 77%)12475(Top 221%)
15K9.32 mi3.11 mi19855+15212416+6012416+6019498(Top 69%)12274(Top 76%)12274(Top 218%)
20K12.43 mi3.11 mi19846+912402+1412402+1419887(Top 70%)12406(Top 77%)12406(Top 220%)
Half13.11 mi0.68 mi19736+11012353+4912353+4917459(Top 61%)11398(Top 71%)11398(Top 202%)
25K15.53 mi2.42 mi19417+31912209+14412209+14417951(Top 63%)11502(Top 71%)11502(Top 204%)
30K18.64 mi3.11 mi19184+23312066+14312066+14318245(Top 64%)11484(Top 71%)11484(Top 204%)
20M20.00 mi1.36 mi19079+10512001+6512001+6518018(Top 63%)11247(Top 70%)11247(Top 199%)
21M21.00 mi1.00 mi19038+4111959+4211959+4218418(Top 65%)11350(Top 70%)11350(Top 201%)
35K21.75 mi0.75 mi19019+1911933+2611933+2618543(Top 65%)11274(Top 70%)11274(Top 200%)
23M23.00 mi1.25 mi18910+10911859+7411859+7417308(Top 61%)10654(Top 66%)10654(Top 189%)
24M24.00 mi1.00 mi18862+4811815+4411815+4417684(Top 62%)10781(Top 67%)10781(Top 191%)
40K24.85 mi0.85 mi18754+10811737+7811737+7815895(Top 56%)9871(Top 61%)9871(Top 175%)
25.2M25.20 mi0.35 mi18675+7911688+4911688+4914682(Top 52%)9275(Top 58%)9275(Top 164%)
Finish26.22 mi1.02 mi18554+12111624+6411624+6415289(Top 54%)9619(Top 60%)9619(Top 170%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

19498

Males

12274

M18-39

12274

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

19991

Males

12475

M18-39

12475

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

19498

Males

12274

M18-39

12274

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

19887

Males

12406

M18-39

12406

20K→Half

12.4 - 13.1 mi

Top 61%
×2stories
+19ft-37ft

Overall

17459

Males

11398

M18-39

11398

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

17951

Males

11502

M18-39

11502

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

18245

Males

11484

M18-39

11484

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

18018

Males

11247

M18-39

11247

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

18418

Males

11350

M18-39

11350

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

18543

Males

11274

M18-39

11274

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

17308

Males

10654

M18-39

10654

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

17684

Males

10781

M18-39

10781

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15895

Males

9871

M18-39

9871

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14682

Males

9275

M18-39

9275

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

15289

Males

9619

M18-39

9619

Passing Analysis

Category:
Athletes Passed
2470
Passed By
1009
Net Change
+1461
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20015
5K → 10K284276+8#20015#20007
10K → 15K275123+152#20007#19855
15K → 20K200191+9#19855#19846
20K → Half1133+110#19846#19736
Half → 25K34324+319#19736#19417
25K → 30K342109+233#19417#19184
30K → 20M15853+105#19184#19079
20M → 21M11170+41#19079#19038
21M → 35K6849+19#19038#19019
35K → 23M14637+109#19019#18910
23M → 24M8941+48#18910#18862
24M → 40K12517+108#18862#18754
40K → 25.2M823+79#18754#18675
25.2M → Finish13413+121#18675#18554
TOTALS24701009+1461
📊

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