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BOSTON MARATHON 2025

Colin Shea

Bib: 12080•M

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:51/mi
24:24
↑ 97↓ 3451.5%
10K· 6.21 mi
8:04/mi
49:27
↑ 79↓ 1380.4%
15K· 9.32 mi
8:11/mi
1:14:53
↑ 67↓ 78
20K· 12.43 mi
8:09/mi
1:40:12
↑ 106↓ 860.1%
Half· 13.11 mi
8:01/mi
1:45:40
↑ 19↓ 370.5%
25K· 15.53 mi
8:24/mi
2:06:01
↑ 66↓ 880.2%
30K· 18.64 mi
8:49/mi
2:33:24
↑ 181↓ 1480.2%
20M
9:02/mi
2:45:41
↑ 64↓ 500.2%
21M
9:21/mi
2:55:02
↑ 106↓ 241.6%
35K· 21.75 mi
9:12/mi
3:01:55
↑ 17↓ 861.7%
23M
9:21/mi
3:13:38
↑ 23↓ 630.6%
24M
9:11/mi
3:22:49
↓ 821.3%
40K· 24.85 mi
9:02/mi
3:30:32
↓ 200.3%
25.2M
9:43/mi
3:33:53
↑ 13↓ 160.2%
Finish· 26.22 mi
8:42/mi
3:42:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:40
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:57:05
Pace8:56 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:0824:247:5124:24
7:51
-
10K
6.21 mi11:17:1149:277:5725:03
8:04
+0:13
15K
9.32 mi11:42:371:14:538:0225:26
8:11
+0:07
20K
12.43 mi12:07:561:40:128:0425:19
8:09
-0:02
Half
13.11 mi12:13:241:45:408:045:28
8:01
-0:08
25K
15.53 mi12:33:452:06:018:0720:21
8:24
+0:23
30K
18.64 mi13:01:082:33:248:1427:23
8:49
+0:25
20M
20.00 mi13:13:252:45:418:1712:17
9:02
+0:13
21M
21.00 mi13:22:462:55:028:209:21
9:21
+0:19
35K
21.75 mi13:29:393:01:558:226:53
9:12
-0:09
23M
23.00 mi13:41:223:13:388:2511:43
9:21
+0:09
24M
24.00 mi13:50:333:22:498:279:11
9:11
-0:10
40K
24.85 mi13:58:163:30:328:287:43
9:02
-0:09
25.2M
25.20 mi14:01:373:33:538:293:21
9:43
+0:41
Finish
26.22 mi14:10:293:42:458:308:52
8:42
-1:01

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

7:51 /mi

Average Pace

8:30 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:01

57% of race

Time at Steady Pace

56:15

25% of race

Time at Slower Pace

40:29

18% of race

Average Pace: 8:30 /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 mi10:52:0824:247:5124:24
7:51
#15280
10K
6.21 mi11:17:1149:277:5725:03
8:04
#16150
15K
9.32 mi11:42:371:14:538:0225:26
8:11
#16587
20K
12.43 mi12:07:561:40:128:0425:19
8:09
#16400
Half
13.11 mi12:13:241:45:408:045:28
8:01
#16383
25K
15.53 mi12:33:452:06:018:0720:21
8:24
#16396
30K
18.64 mi13:01:082:33:248:1427:23
8:49
#16398
20M
20.00 mi13:13:252:45:418:1712:17
9:02
#16391
21M
21.00 mi13:22:462:55:028:209:21
9:21
#16296
35K
21.75 mi13:29:393:01:558:226:53
9:12
#16384
23M
23.00 mi13:41:223:13:388:2511:43
9:21
#16454
24M
24.00 mi13:50:333:22:498:279:11
9:11
#16556
40K
24.85 mi13:58:163:30:328:287:43
9:02
#16548
25.2M
25.20 mi14:01:373:33:538:293:21
9:43
#16527
Finish
26.22 mi14:10:293:42:458:308:52
8:42
#16562
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi15280105361053617296(Top 61%)11347(Top 70%)11347(Top 476%)
10K6.21 mi3.10 mi16150-87010868-33210868-33216924(Top 60%)11214(Top 70%)11214(Top 470%)
15K9.32 mi3.11 mi16587-43711059-19111059-19117296(Top 61%)11347(Top 70%)11347(Top 476%)
20K12.43 mi3.11 mi16400+18710976+8310976+8315969(Top 56%)10731(Top 67%)10731(Top 450%)
Half13.11 mi0.68 mi16383+1710966+1010966+1015955(Top 56%)10758(Top 67%)10758(Top 451%)
25K15.53 mi2.42 mi16396-1310944+2210944+2216517(Top 58%)10880(Top 68%)10880(Top 456%)
30K18.64 mi3.11 mi16398-210880+6410880+6416672(Top 59%)10784(Top 67%)10784(Top 452%)
20M20.00 mi1.36 mi16391+710855+2510855+2516988(Top 60%)10814(Top 67%)10814(Top 453%)
21M21.00 mi1.00 mi16296+9510783+7210783+7215387(Top 54%)9959(Top 62%)9959(Top 417%)
35K21.75 mi0.75 mi16384-8810806-2310806-2319149(Top 67%)11567(Top 72%)11567(Top 485%)
23M23.00 mi1.25 mi16454-7010808-210808-218034(Top 63%)10992(Top 68%)10992(Top 461%)
24M24.00 mi1.00 mi16556-10210821-1310821-1318253(Top 64%)11035(Top 69%)11035(Top 462%)
40K24.85 mi0.85 mi16548+810788+3310788+3316433(Top 58%)10116(Top 63%)10116(Top 424%)
25.2M25.20 mi0.35 mi16527+2110769+1910769+1915644(Top 55%)9710(Top 60%)9710(Top 407%)
Finish26.22 mi1.02 mi16562-3510755+1410755+1417457(Top 61%)10619(Top 66%)10619(Top 445%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

17296

Males

11347

M45-49

11347

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

16924

Males

11214

M45-49

11214

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

17296

Males

11347

M45-49

11347

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15969

Males

10731

M45-49

10731

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

15955

Males

10758

M45-49

10758

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16517

Males

10880

M45-49

10880

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

16672

Males

10784

M45-49

10784

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

16988

Males

10814

M45-49

10814

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

15387

Males

9959

M45-49

9959

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

19149

Males

11567

M45-49

11567

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

18034

Males

10992

M45-49

10992

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

18253

Males

11035

M45-49

11035

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16433

Males

10116

M45-49

10116

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15644

Males

9710

M45-49

9710

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

17457

Males

10619

M45-49

10619

Passing Analysis

Category:
Athletes Passed
1555
Passed By
2837
Net Change
-1282
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15280
5K → 10K84954-870#15280#16150
10K → 15K94531-437#16150#16587
15K → 20K303116+187#16587#16400
20K → Half4629+17#16400#16383
Half → 25K146159-13#16383#16396
25K → 30K240242-2#16396#16398
30K → 20M113106+7#16398#16391
20M → 21M14853+95#16391#16296
21M → 35K44132-88#16296#16384
35K → 23M99169-70#16384#16454
23M → 24M46148-102#16454#16556
24M → 40K8072+8#16556#16548
40K → 25.2M4322+21#16548#16527
25.2M → Finish69104-35#16527#16562
TOTALS15552837-1282
📊

Passing Visuals

Category:
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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