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BOSTON MARATHON 2025

Joby Kolsun

Bib: 22477•M

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 49%
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
8:05/mi
25:08
↑ 97↓ 3451.5%
10K· 6.21 mi
8:18/mi
50:55
↑ 79↓ 1380.4%
15K· 9.32 mi
8:18/mi
1:16:41
↑ 67↓ 78
20K· 12.43 mi
8:30/mi
1:43:04
↑ 106↓ 860.1%
Half· 13.11 mi
8:20/mi
1:48:45
↑ 19↓ 370.5%
25K· 15.53 mi
8:36/mi
2:09:35
↑ 66↓ 880.2%
30K· 18.64 mi
9:03/mi
2:37:43
↑ 181↓ 1480.2%
20M
9:00/mi
2:49:57
↑ 64↓ 500.2%
21M
10:00/mi
2:59:57
↑ 106↓ 241.6%
35K· 21.75 mi
9:41/mi
3:07:12
↑ 17↓ 861.7%
23M
9:30/mi
3:19:06
↑ 23↓ 630.6%
24M
9:20/mi
3:28:26
↓ 821.3%
40K· 24.85 mi
9:47/mi
3:36:48
↓ 200.3%
25.2M
10:47/mi
3:40:31
↑ 13↓ 160.2%
Finish· 26.22 mi
9:46/mi
3:50:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:45
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time2:01:43
Pace9:17 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3725:088:0525:08
8:05
-
10K
6.21 mi11:45:2450:558:1225:47
8:18
+0:13
15K
9.32 mi12:11:101:16:418:1425:46
8:18
0:00
20K
12.43 mi12:37:331:43:048:1826:23
8:30
+0:12
Half
13.11 mi12:43:141:48:458:185:41
8:20
-0:10
25K
15.53 mi13:04:042:09:358:2120:50
8:36
+0:16
30K
18.64 mi13:32:122:37:438:2828:08
9:03
+0:27
20M
20.00 mi13:44:262:49:578:3012:14
9:00
-0:03
21M
21.00 mi13:54:262:59:578:3410:00
10:00
+1:00
35K
21.75 mi14:01:413:07:128:367:15
9:41
-0:19
23M
23.00 mi14:13:353:19:068:3911:54
9:30
-0:11
24M
24.00 mi14:22:553:28:268:419:20
9:20
-0:10
40K
24.85 mi14:31:173:36:488:438:22
9:47
+0:27
25.2M
25.20 mi14:35:003:40:318:453:43
10:47
+1:00
Finish
26.22 mi14:44:573:50:288:489:57
9:46
-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

8:05 /mi

Average Pace

8:48 /mi

Slowest Pace

10:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:35

56% of race

Time at Steady Pace

49:42

22% of race

Time at Slower Pace

51:11

22% of race

Average Pace: 8:47 /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 mi11:19:3725:088:0525:08
8:05
#17274
10K
6.21 mi11:45:2450:558:1225:47
8:18
#17946
15K
9.32 mi12:11:101:16:418:1425:46
8:18
#17934
20K
12.43 mi12:37:331:43:048:1826:23
8:30
#17960
Half
13.11 mi12:43:141:48:458:185:41
8:20
#17952
25K
15.53 mi13:04:042:09:358:2120:50
8:36
#17872
30K
18.64 mi13:32:122:37:438:2828:08
9:03
#17843
20M
20.00 mi13:44:262:49:578:3012:14
9:00
#17762
21M
21.00 mi13:54:262:59:578:3410:00
10:00
#17817
35K
21.75 mi14:01:413:07:128:367:15
9:41
#17977
23M
23.00 mi14:13:353:19:068:3911:54
9:30
#18012
24M
24.00 mi14:22:553:28:268:419:20
9:20
#18059
40K
24.85 mi14:31:173:36:488:438:22
9:47
#18152
25.2M
25.20 mi14:35:003:40:318:453:43
10:47
#18202
Finish
26.22 mi14:44:573:50:288:489:57
9:46
#18424
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17274113191131917997(Top 63%)11630(Top 72%)11630(Top 924%)
10K6.21 mi3.10 mi17946-67211603-28411603-28418535(Top 65%)11863(Top 74%)11863(Top 942%)
15K9.32 mi3.11 mi17934+1211598+511598+517997(Top 63%)11630(Top 72%)11630(Top 924%)
20K12.43 mi3.11 mi17960-2611593+511593+518166(Top 64%)11685(Top 73%)11685(Top 928%)
Half13.11 mi0.68 mi17952+811592+111592+118081(Top 64%)11671(Top 72%)11671(Top 927%)
25K15.53 mi2.42 mi17872+8011541+5111541+5117758(Top 63%)11426(Top 71%)11426(Top 908%)
30K18.64 mi3.11 mi17843+2911480+6111480+6117952(Top 63%)11354(Top 70%)11354(Top 902%)
20M20.00 mi1.36 mi17762+8111412+6811412+6816798(Top 59%)10730(Top 67%)10730(Top 852%)
21M21.00 mi1.00 mi17817-5511436-2411436-2418279(Top 64%)11295(Top 70%)11295(Top 897%)
35K21.75 mi0.75 mi17977-16011489-5311489-5320954(Top 74%)12416(Top 77%)12416(Top 986%)
23M23.00 mi1.25 mi18012-3511462+2711462+2718715(Top 66%)11310(Top 70%)11310(Top 898%)
24M24.00 mi1.00 mi18059-4711463-111463-118949(Top 67%)11385(Top 71%)11385(Top 904%)
40K24.85 mi0.85 mi18152-9311473-1011473-1019751(Top 70%)11680(Top 73%)11680(Top 928%)
25.2M25.20 mi0.35 mi18202-5011486-1311486-1319929(Top 70%)11751(Top 73%)11751(Top 933%)
Finish26.22 mi1.02 mi18424-22211553-6711553-6722126(Top 78%)12840(Top 80%)12840(Top 1020%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

17997

Males

11630

M60-64

11630

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

18535

Males

11863

M60-64

11863

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

17997

Males

11630

M60-64

11630

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

18166

Males

11685

M60-64

11685

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

18081

Males

11671

M60-64

11671

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

17758

Males

11426

M60-64

11426

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

17952

Males

11354

M60-64

11354

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

16798

Males

10730

M60-64

10730

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18279

Males

11295

M60-64

11295

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

20954

Males

12416

M60-64

12416

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

18715

Males

11310

M60-64

11310

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

18949

Males

11385

M60-64

11385

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19751

Males

11680

M60-64

11680

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19929

Males

11751

M60-64

11751

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

22126

Males

12840

M60-64

12840

Passing Analysis

Category:
Athletes Passed
1459
Passed By
2609
Net Change
-1150
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17274
5K → 10K99771-672#17274#17946
10K → 15K196184+12#17946#17934
15K → 20K184210-26#17934#17960
20K → Half3931+8#17960#17952
Half → 25K199119+80#17952#17872
25K → 30K244215+29#17872#17843
30K → 20M15877+81#17843#17762
20M → 21M83138-55#17762#17817
21M → 35K32192-160#17817#17977
35K → 23M96131-35#17977#18012
23M → 24M61108-47#18012#18059
24M → 40K43136-93#18059#18152
40K → 25.2M1161-50#18152#18202
25.2M → Finish14236-222#18202#18424
TOTALS14592609-1150
📊

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