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BOSTON MARATHON 2025

Rob Coslick

Bib: 4468•M

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
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
6:56/mi
21:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:03/mi
43:26
↑ 79↓ 1380.4%
15K· 9.32 mi
7:06/mi
1:05:29
↑ 67↓ 78
20K· 12.43 mi
7:28/mi
1:28:41
↑ 106↓ 860.1%
Half· 13.11 mi
7:20/mi
1:33:41
↑ 19↓ 370.5%
25K· 15.53 mi
8:12/mi
1:53:34
↑ 66↓ 880.2%
30K· 18.64 mi
9:17/mi
2:22:26
↑ 181↓ 1480.2%
20M
9:31/mi
2:35:22
↑ 64↓ 500.2%
21M
10:40/mi
2:46:02
↑ 106↓ 241.6%
35K· 21.75 mi
9:39/mi
2:53:15
↑ 17↓ 861.7%
23M
9:47/mi
3:05:30
↑ 23↓ 630.6%
24M
9:39/mi
3:15:09
↓ 821.3%
40K· 24.85 mi
10:53/mi
3:24:27
↓ 200.3%
25.2M
11:56/mi
3:28:34
↑ 13↓ 160.2%
Finish· 26.22 mi
9:41/mi
3:38:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:41
Pace7:09 /mi
2nd Half
Distance13.11 mi
Time2:04:45
Pace9:31 /mi
📊Positive Split: 33.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:3821:336:5621:33
6:56
-
10K
6.21 mi10:46:3143:266:5921:53
7:03
+0:07
15K
9.32 mi11:08:341:05:297:0222:03
7:06
+0:03
20K
12.43 mi11:31:461:28:417:0823:12
7:28
+0:22
Half
13.11 mi11:36:461:33:417:095:00
7:20
-0:08
25K
15.53 mi11:56:391:53:347:1919:53
8:12
+0:52
30K
18.64 mi12:25:312:22:267:3828:52
9:17
+1:05
20M
20.00 mi12:38:272:35:227:4612:56
9:31
+0:14
21M
21.00 mi12:49:072:46:027:5410:40
10:40
+1:09
35K
21.75 mi12:56:202:53:157:587:13
9:39
-1:01
23M
23.00 mi13:08:353:05:308:0412:15
9:47
+0:08
24M
24.00 mi13:18:143:15:098:089:39
9:39
-0:08
40K
24.85 mi13:27:323:24:278:149:18
10:53
+1:14
25.2M
25.20 mi13:31:393:28:348:174:07
11:56
+1:03
Finish
26.22 mi13:41:313:38:268:209:52
9:41
-2:15

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

6:56 /mi

Average Pace

8:20 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:34

52% of race

Time at Steady Pace

1:20:47

37% of race

Time at Slower Pace

24:05

11% of race

Average Pace: 8:20 /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 mi10:24:3821:336:5621:33
6:56
#7341
10K
6.21 mi10:46:3143:266:5921:53
7:03
#7781
15K
9.32 mi11:08:341:05:297:0222:03
7:06
#7941
20K
12.43 mi11:31:461:28:417:0823:12
7:28
#8429
Half
13.11 mi11:36:461:33:417:095:00
7:20
#8504
25K
15.53 mi11:56:391:53:347:1919:53
8:12
#9667
30K
18.64 mi12:25:312:22:267:3828:52
9:17
#11742
20M
20.00 mi12:38:272:35:227:4612:56
9:31
#12464
21M
21.00 mi12:49:072:46:027:5410:40
10:40
#13138
35K
21.75 mi12:56:202:53:157:587:13
9:39
#13525
23M
23.00 mi13:08:353:05:308:0412:15
9:47
#14060
24M
24.00 mi13:18:143:15:098:089:39
9:39
#14421
40K
24.85 mi13:27:323:24:278:149:18
10:53
#14919
25.2M
25.20 mi13:31:393:28:348:174:07
11:56
#15150
Finish
26.22 mi13:41:313:38:268:209:52
9:41
#15473
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi7341655165518319(Top 29%)7132(Top 44%)7132(Top 317%)
10K6.21 mi3.10 mi7781-4406843-2926843-2928246(Top 29%)7136(Top 44%)7136(Top 318%)
15K9.32 mi3.11 mi7941-1606945-1026945-1028319(Top 29%)7132(Top 44%)7132(Top 317%)
20K12.43 mi3.11 mi8429-4887211-2667211-26610482(Top 37%)8258(Top 51%)8258(Top 368%)
Half13.11 mi0.68 mi8504-757261-507261-5010273(Top 36%)8189(Top 51%)8189(Top 364%)
25K15.53 mi2.42 mi9667-11637890-6297890-62915311(Top 54%)10367(Top 64%)10367(Top 461%)
30K18.64 mi3.11 mi11742-20758846-9568846-95619059(Top 67%)11859(Top 74%)11859(Top 528%)
20M20.00 mi1.36 mi12464-7229146-3009146-30019236(Top 68%)11790(Top 73%)11790(Top 525%)
21M21.00 mi1.00 mi13138-6749421-2759421-27520485(Top 72%)12248(Top 76%)12248(Top 545%)
35K21.75 mi0.75 mi13525-3879561-1409561-14020813(Top 73%)12351(Top 77%)12351(Top 550%)
23M23.00 mi1.25 mi14060-5359765-2049765-20419724(Top 69%)11767(Top 73%)11767(Top 524%)
24M24.00 mi1.00 mi14421-3619914-1499914-14920172(Top 71%)11944(Top 74%)11944(Top 532%)
40K24.85 mi0.85 mi14919-49810093-17910093-17922839(Top 80%)13160(Top 82%)13160(Top 586%)
25.2M25.20 mi0.35 mi15150-23110169-7610169-7623061(Top 81%)13304(Top 83%)13304(Top 592%)
Finish26.22 mi1.02 mi15473-32310288-11910288-11921833(Top 77%)12697(Top 79%)12697(Top 565%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

8319

Males

7132

M40-44

7132

5K→10K

3.1 - 6.2 mi

Top 29%
×5story building
+79ft-138ft

Overall

8246

Males

7136

M40-44

7136

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

8319

Males

7132

M40-44

7132

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10482

Males

8258

M40-44

8258

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

10273

Males

8189

M40-44

8189

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

15311

Males

10367

M40-44

10367

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

19059

Males

11859

M40-44

11859

30K→20M

18.6 - 20.0 mi

Top 68%
×5story building
+64ft-50ft

Overall

19236

Males

11790

M40-44

11790

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

20485

Males

12248

M40-44

12248

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20813

Males

12351

M40-44

12351

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

19724

Males

11767

M40-44

11767

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20172

Males

11944

M40-44

11944

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22839

Males

13160

M40-44

13160

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

23061

Males

13304

M40-44

13304

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2story building
+22ft-21ft

Overall

21833

Males

12697

M40-44

12697

Passing Analysis

Category:
Athletes Passed
389
Passed By
8519
Net Change
-8132
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7341
5K → 10K70510-440#7341#7781
10K → 15K92252-160#7781#7941
15K → 20K56544-488#7941#8429
20K → Half1186-75#8429#8504
Half → 25K241187-1163#8504#9667
25K → 30K132086-2075#9667#11742
30K → 20M22744-722#11742#12464
20M → 21M17691-674#12464#13138
21M → 35K8395-387#13138#13525
35K → 23M31566-535#13525#14060
23M → 24M15376-361#14060#14421
24M → 40K13511-498#14421#14919
40K → 25.2M7238-231#14919#15150
25.2M → Finish10333-323#15150#15473
TOTALS3898519-8132
📊

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