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BOSTON MARATHON 2025

Cole Joslin

Bib: 27530•M

MA

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

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
8:14/mi
25:36
↑ 97↓ 3451.5%
10K· 6.21 mi
8:17/mi
51:19
↑ 79↓ 1380.4%
15K· 9.32 mi
8:16/mi
1:17:00
↑ 67↓ 78
20K· 12.43 mi
8:24/mi
1:43:06
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:48:36
↑ 19↓ 370.5%
25K· 15.53 mi
8:23/mi
2:08:56
↑ 66↓ 880.2%
30K· 18.64 mi
9:05/mi
2:37:10
↑ 181↓ 1480.2%
20M
9:24/mi
2:49:56
↑ 64↓ 500.2%
21M
10:02/mi
2:59:58
↑ 106↓ 241.6%
35K· 21.75 mi
9:32/mi
3:07:06
↑ 17↓ 861.7%
23M
10:17/mi
3:19:59
↑ 23↓ 630.6%
24M
10:05/mi
3:30:04
↓ 821.3%
40K· 24.85 mi
10:22/mi
3:38:56
↓ 200.3%
25.2M
9:54/mi
3:42:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:50:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:36
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time2:01:57
Pace9:18 /mi
📊Positive Split: 12.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:3425:368:1425:36
8:14
-
10K
6.21 mi12:14:1751:198:1625:43
8:17
+0:03
15K
9.32 mi12:39:581:17:008:1625:41
8:16
-0:01
20K
12.43 mi13:06:041:43:068:1826:06
8:24
+0:08
Half
13.11 mi13:11:341:48:368:175:30
8:04
-0:20
25K
15.53 mi13:31:542:08:568:1820:20
8:23
+0:19
30K
18.64 mi14:00:082:37:108:2628:14
9:05
+0:42
20M
20.00 mi14:12:542:49:568:3012:46
9:24
+0:19
21M
21.00 mi14:22:562:59:588:3410:02
10:02
+0:38
35K
21.75 mi14:30:043:07:068:367:08
9:32
-0:30
23M
23.00 mi14:42:573:19:598:4212:53
10:17
+0:45
24M
24.00 mi14:53:023:30:048:4510:05
10:05
-0:12
40K
24.85 mi15:01:543:38:568:498:52
10:22
+0:17
25.2M
25.20 mi15:05:193:42:218:493:25
9:54
-0:28
Finish
26.22 mi15:13:313:50:338:488:12
8:03
-1:51

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

8:03 /mi

Average Pace

8:48 /mi

Slowest Pace

10:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:08

59% of race

Time at Steady Pace

41:00

18% of race

Time at Slower Pace

52:25

23% of race

Average Pace: 8:48 /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 mi11:48:3425:368:1425:36
8:14
#18353
10K
6.21 mi12:14:1751:198:1625:43
8:17
#18359
15K
9.32 mi12:39:581:17:008:1625:41
8:16
#18158
20K
12.43 mi13:06:041:43:068:1826:06
8:24
#17974
Half
13.11 mi13:11:341:48:368:175:30
8:04
#17878
25K
15.53 mi13:31:542:08:568:1820:20
8:23
#17589
30K
18.64 mi14:00:082:37:108:2628:14
9:05
#17676
20M
20.00 mi14:12:542:49:568:3012:46
9:24
#17759
21M
21.00 mi14:22:562:59:588:3410:02
10:02
#17823
35K
21.75 mi14:30:043:07:068:367:08
9:32
#17949
23M
23.00 mi14:42:573:19:598:4212:53
10:17
#18264
24M
24.00 mi14:53:023:30:048:4510:05
10:05
#18479
40K
24.85 mi15:01:543:38:568:498:52
10:22
#18664
25.2M
25.20 mi15:05:193:42:218:493:25
9:54
#18623
Finish
26.22 mi15:13:313:50:338:488:12
8:03
#18441
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi18353117431174317821(Top 63%)11556(Top 72%)11556(Top 205%)
10K6.21 mi3.10 mi18359-611769-2611769-2618399(Top 65%)11807(Top 73%)11807(Top 209%)
15K9.32 mi3.11 mi18158+20111682+8711682+8717821(Top 63%)11556(Top 72%)11556(Top 205%)
20K12.43 mi3.11 mi17974+18411600+8211600+8217553(Top 62%)11427(Top 71%)11427(Top 203%)
Half13.11 mi0.68 mi17878+9611553+4711553+4716356(Top 58%)10932(Top 68%)10932(Top 194%)
25K15.53 mi2.42 mi17589+28911428+12511428+12516486(Top 58%)10867(Top 67%)10867(Top 193%)
30K18.64 mi3.11 mi17676-8711402+2611402+2618124(Top 64%)11428(Top 71%)11428(Top 203%)
20M20.00 mi1.36 mi17759-8311411-911411-918711(Top 66%)11549(Top 72%)11549(Top 205%)
21M21.00 mi1.00 mi17823-6411440-2911440-2918416(Top 65%)11348(Top 70%)11348(Top 201%)
35K21.75 mi0.75 mi17949-12611483-4311483-4320427(Top 72%)12168(Top 76%)12168(Top 216%)
23M23.00 mi1.25 mi18264-31511580-9711580-9721373(Top 75%)12581(Top 78%)12581(Top 223%)
24M24.00 mi1.00 mi18479-21511647-6711647-6721577(Top 76%)12621(Top 78%)12621(Top 224%)
40K24.85 mi0.85 mi18664-18511701-5411701-5421564(Top 76%)12543(Top 78%)12543(Top 222%)
25.2M25.20 mi0.35 mi18623+4111666+3511666+3516576(Top 58%)10169(Top 63%)10169(Top 180%)
Finish26.22 mi1.02 mi18441+18211564+10211564+10213199(Top 46%)8622(Top 54%)8622(Top 153%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

17821

Males

11556

M18-39

11556

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18399

Males

11807

M18-39

11807

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

17821

Males

11556

M18-39

11556

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

17553

Males

11427

M18-39

11427

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

16356

Males

10932

M18-39

10932

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16486

Males

10867

M18-39

10867

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18124

Males

11428

M18-39

11428

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

18711

Males

11549

M18-39

11549

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

18416

Males

11348

M18-39

11348

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

20427

Males

12168

M18-39

12168

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21373

Males

12581

M18-39

12581

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

21577

Males

12621

M18-39

12621

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21564

Males

12543

M18-39

12543

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16576

Males

10169

M18-39

10169

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

13199

Males

8622

M18-39

8622

Passing Analysis

Category:
Athletes Passed
1996
Passed By
2084
Net Change
-88
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18353
5K → 10K254260-6#18353#18359
10K → 15K29089+201#18359#18158
15K → 20K28399+184#18158#17974
20K → Half982+96#17974#17878
Half → 25K31829+289#17878#17589
25K → 30K189276-87#17589#17676
30K → 20M94177-83#17676#17759
20M → 21M79143-64#17759#17823
21M → 35K39165-126#17823#17949
35K → 23M37352-315#17949#18264
23M → 24M37252-215#18264#18479
24M → 40K34219-185#18479#18664
40K → 25.2M5413+41#18664#18623
25.2M → Finish1908+182#18623#18441
TOTALS19962084-88
📊

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