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BOSTON MARATHON 2025

Colin Kirk

Bib: 4249•M

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 17%
Gender (Male)
#0 / 16105
Top 27%
Masters (Masters Men)
#0 / 10463
Top 13%
Division (M40-44)
#0 / 2247
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:48
Rank: #5381
Start → 5K
20:48 | 6:42/mi
10K· 6.21 mi
41:43
Rank: #5497 (-116)
5K → 10K
20:55 | 6:44/mi
15K· 9.32 mi
1:02:33
Rank: #5350 (+147)
10K → 15K
20:50 | 6:42/mi
20K· 12.43 mi
1:23:33
Rank: #5190 (+160)
15K → 20K
21:00 | 6:46/mi
Half· 13.11 mi
1:28:10
Rank: #5216 (-26)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:44:49
Rank: #5241 (-25)
Half → 25K
16:39 | 6:52/mi
30K· 18.64 mi
2:06:47
Rank: #5172 (+69)
25K → 30K
21:58 | 7:04/mi
20M
2:16:19
Rank: #5061 (+111)
30K → 20M
9:32 | 7:01/mi
21M
2:23:43
Rank: #4968 (+93)
20M → 21M
7:24 | 7:24/mi
35K· 21.75 mi
2:29:09
Rank: #5051 (-83)
21M → 35K
5:26 | 7:16/mi
23M
2:37:50
Rank: #4895 (+156)
35K → 23M
8:41 | 6:56/mi
24M
2:44:53
Rank: #4891 (+4)
23M → 24M
7:03 | 7:03/mi
40K· 24.85 mi
2:50:52
Rank: #4826 (+65)
24M → 40K
5:59 | 7:00/mi
25.2M
2:53:28
Rank: #4789 (+37)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
3:00:18
Rank: #4747 (+42)
25.2M → Finish
6:50 | 6:42/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:10
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:32:08
Pace7:02 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1220:486:4220:48
6:42
-
10K
6.21 mi10:44:0741:436:4320:55
6:44
+0:02
15K
9.32 mi11:04:571:02:336:4320:50
6:42
-0:02
20K
12.43 mi11:25:571:23:336:4321:00
6:46
+0:04
Half
13.11 mi11:30:341:28:106:444:37
6:46
0:00
25K
15.53 mi11:47:131:44:496:4516:39
6:52
+0:06
30K
18.64 mi12:09:112:06:476:4821:58
7:04
+0:12
20M
20.00 mi12:18:432:16:196:499:32
7:01
-0:03
21M
21.00 mi12:26:072:23:436:517:24
7:24
+0:23
35K
21.75 mi12:31:332:29:096:515:26
7:16
-0:08
23M
23.00 mi12:40:142:37:506:528:41
6:56
-0:20
24M
24.00 mi12:47:172:44:536:527:03
7:03
+0:07
40K
24.85 mi12:53:162:50:526:525:59
7:00
-0:03
25.2M
25.20 mi12:55:522:53:286:532:36
7:32
+0:32
Finish
26.22 mi13:02:423:00:186:536:50
6:42
-0:50

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

6:42 /mi

Average Pace

6:53 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:18

94% of race

Time at Steady Pace

10:00

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:53 /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 mi10:23:1220:486:4220:48
6:42
#5381
10K
6.21 mi10:44:0741:436:4320:55
6:44
#5497
15K
9.32 mi11:04:571:02:336:4320:50
6:42
#5350
20K
12.43 mi11:25:571:23:336:4321:00
6:46
#5190
Half
13.11 mi11:30:341:28:106:444:37
6:46
#5216
25K
15.53 mi11:47:131:44:496:4516:39
6:52
#5241
30K
18.64 mi12:09:112:06:476:4821:58
7:04
#5172
20M
20.00 mi12:18:432:16:196:499:32
7:01
#5061
21M
21.00 mi12:26:072:23:436:517:24
7:24
#4968
35K
21.75 mi12:31:332:29:096:515:26
7:16
#5051
23M
23.00 mi12:40:142:37:506:528:41
6:56
#4895
24M
24.00 mi12:47:172:44:536:527:03
7:03
#4891
40K
24.85 mi12:53:162:50:526:525:59
7:00
#4826
25.2M
25.20 mi12:55:522:53:286:532:36
7:32
#4789
Finish
26.22 mi13:02:423:00:186:536:50
6:42
#4747
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5381499849985115(Top 18%)4740(Top 29%)4740(Top 211%)
10K6.21 mi3.10 mi5497-1165081-835081-835636(Top 20%)5176(Top 32%)5176(Top 230%)
15K9.32 mi3.11 mi5350+1474959+1224959+1225115(Top 18%)4740(Top 29%)4740(Top 211%)
20K12.43 mi3.11 mi5190+1604810+1494810+1494907(Top 17%)4535(Top 28%)4535(Top 202%)
Half13.11 mi0.68 mi5216-264833-234833-235749(Top 20%)5236(Top 33%)5236(Top 233%)
25K15.53 mi2.42 mi5241-254840-74840-75392(Top 19%)4908(Top 30%)4908(Top 218%)
30K18.64 mi3.11 mi5172+694759+814759+815132(Top 18%)4644(Top 29%)4644(Top 207%)
20M20.00 mi1.36 mi5061+1114660+994660+994180(Top 15%)3819(Top 24%)3819(Top 170%)
21M21.00 mi1.00 mi4968+934575+854575+854104(Top 14%)3702(Top 23%)3702(Top 165%)
35K21.75 mi0.75 mi5051-834637-624637-626928(Top 24%)5638(Top 35%)5638(Top 251%)
23M23.00 mi1.25 mi4895+1564496+1414496+1413405(Top 12%)3093(Top 19%)3093(Top 138%)
24M24.00 mi1.00 mi4891+44482+144482+144887(Top 17%)4175(Top 26%)4175(Top 186%)
40K24.85 mi0.85 mi4826+654422+604422+603866(Top 14%)3385(Top 21%)3385(Top 151%)
25.2M25.20 mi0.35 mi4789+374385+374385+373550(Top 12%)3094(Top 19%)3094(Top 138%)
Finish26.22 mi1.02 mi4747+424343+424343+423890(Top 14%)3355(Top 21%)3355(Top 149%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

5115

Males

4740

M40-44

4740

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5636

Males

5176

M40-44

5176

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

5115

Males

4740

M40-44

4740

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4907

Males

4535

M40-44

4535

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5749

Males

5236

M40-44

5236

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5392

Males

4908

M40-44

4908

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

5132

Males

4644

M40-44

4644

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4180

Males

3819

M40-44

3819

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

4104

Males

3702

M40-44

3702

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6928

Males

5638

M40-44

5638

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3405

Males

3093

M40-44

3093

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4887

Males

4175

M40-44

4175

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3866

Males

3385

M40-44

3385

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3550

Males

3094

M40-44

3094

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3890

Males

3355

M40-44

3355

Passing Analysis

Category:
Athletes Passed
1581
Passed By
947
Net Change
+634
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5381
5K → 10K130246-116#5381#5497
10K → 15K20356+147#5497#5350
15K → 20K21151+160#5350#5190
20K → Half2955-26#5190#5216
Half → 25K98123-25#5216#5241
25K → 30K196127+69#5241#5172
30K → 20M13524+111#5172#5061
20M → 21M11724+93#5061#4968
21M → 35K31114-83#4968#5051
35K → 23M16913+156#5051#4895
23M → 24M6965+4#4895#4891
24M → 40K8419+65#4891#4826
40K → 25.2M4811+37#4826#4789
25.2M → Finish6119+42#4789#4747
TOTALS1581947+634
📊

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