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BOSTON MARATHON 2025

John Casterline

Bib: 16817•M

AL

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 24%
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
8:18/mi
25:46
↑ 97↓ 3451.5%
10K· 6.21 mi
8:04/mi
50:51
↑ 79↓ 1380.4%
15K· 9.32 mi
7:58/mi
1:15:35
↑ 67↓ 78
20K· 12.43 mi
7:56/mi
1:40:15
↑ 106↓ 860.1%
Half· 13.11 mi
7:55/mi
1:45:39
↑ 19↓ 370.5%
25K· 15.53 mi
7:54/mi
2:04:49
↑ 66↓ 880.2%
30K· 18.64 mi
8:11/mi
2:30:15
↑ 181↓ 1480.2%
20M
8:19/mi
2:41:33
↑ 64↓ 500.2%
21M
8:46/mi
2:50:19
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:56:13
↑ 17↓ 861.7%
23M
8:26/mi
3:06:47
↑ 23↓ 630.6%
24M
8:23/mi
3:15:10
↓ 821.3%
40K· 24.85 mi
9:23/mi
3:23:11
↓ 200.3%
25.2M
10:06/mi
3:26:40
↑ 13↓ 160.2%
Finish· 26.22 mi
9:15/mi
3:36:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:39
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:50:27
Pace8:26 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:59:3125:468:1825:46
8:18
-
10K
6.21 mi11:24:3650:518:1125:05
8:04
-0:14
15K
9.32 mi11:49:201:15:358:0724:44
7:58
-0:06
20K
12.43 mi12:14:001:40:158:0424:40
7:56
-0:02
Half
13.11 mi12:19:241:45:398:045:24
7:55
-0:01
25K
15.53 mi12:38:342:04:498:0219:10
7:54
-0:01
30K
18.64 mi13:04:002:30:158:0425:26
8:11
+0:17
20M
20.00 mi13:15:182:41:338:0511:18
8:19
+0:08
21M
21.00 mi13:24:042:50:198:078:46
8:46
+0:27
35K
21.75 mi13:29:582:56:138:065:54
7:53
-0:53
23M
23.00 mi13:40:323:06:478:0710:34
8:26
+0:33
24M
24.00 mi13:48:553:15:108:088:23
8:23
-0:03
40K
24.85 mi13:56:563:23:118:108:01
9:23
+1:00
25.2M
25.20 mi14:00:253:26:408:123:29
10:06
+0:43
Finish
26.22 mi14:09:513:36:068:159:26
9:15
-0:51

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

7:53 /mi

Average Pace

8:15 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:52

37% of race

Time at Steady Pace

1:46:32

49% of race

Time at Slower Pace

29:42

14% of race

Average Pace: 8:15 /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 mi10:59:3125:468:1825:46
8:18
#18654
10K
6.21 mi11:24:3650:518:1125:05
8:04
#17853
15K
9.32 mi11:49:201:15:358:0724:44
7:58
#17147
20K
12.43 mi12:14:001:40:158:0424:40
7:56
#16429
Half
13.11 mi12:19:241:45:398:045:24
7:55
#16375
25K
15.53 mi12:38:342:04:498:0219:10
7:54
#15842
30K
18.64 mi13:04:002:30:158:0425:26
8:11
#15217
20M
20.00 mi13:15:182:41:338:0511:18
8:19
#14959
21M
21.00 mi13:24:042:50:198:078:46
8:46
#14739
35K
21.75 mi13:29:582:56:138:065:54
7:53
#14595
23M
23.00 mi13:40:323:06:478:0710:34
8:26
#14471
24M
24.00 mi13:48:553:15:108:088:23
8:23
#14424
40K
24.85 mi13:56:563:23:118:108:01
9:23
#14563
25.2M
25.20 mi14:00:253:26:408:123:29
10:06
#14603
Finish
26.22 mi14:09:513:36:068:159:26
9:15
#14861
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi18654118861188615732(Top 55%)10694(Top 66%)10694(Top 849%)
10K6.21 mi3.10 mi17853+80111557+32911557+32916996(Top 60%)11240(Top 70%)11240(Top 893%)
15K9.32 mi3.11 mi17147+70611301+25611301+25615732(Top 55%)10694(Top 66%)10694(Top 849%)
20K12.43 mi3.11 mi16429+71810987+31410987+31414435(Top 51%)10060(Top 62%)10060(Top 799%)
Half13.11 mi0.68 mi16375+5410960+2710960+2715157(Top 53%)10403(Top 65%)10403(Top 826%)
25K15.53 mi2.42 mi15842+53310717+24310717+24313123(Top 46%)9354(Top 58%)9354(Top 743%)
30K18.64 mi3.11 mi15217+62510388+32910388+32912723(Top 45%)9019(Top 56%)9019(Top 716%)
20M20.00 mi1.36 mi14959+25810242+14610242+14612584(Top 44%)8816(Top 55%)8816(Top 700%)
21M21.00 mi1.00 mi14739+22010125+11710125+11712082(Top 43%)8417(Top 52%)8417(Top 669%)
35K21.75 mi0.75 mi14595+14410049+7610049+7611459(Top 40%)8093(Top 50%)8093(Top 643%)
23M23.00 mi1.25 mi14471+1249958+919958+9112919(Top 45%)8665(Top 54%)8665(Top 688%)
24M24.00 mi1.00 mi14424+479916+429916+4213755(Top 48%)9033(Top 56%)9033(Top 717%)
40K24.85 mi0.85 mi14563-1399942-269942-2618156(Top 64%)10901(Top 68%)10901(Top 866%)
25.2M25.20 mi0.35 mi14603-409944-29944-217404(Top 61%)10544(Top 65%)10544(Top 837%)
Finish26.22 mi1.02 mi14861-25810024-8010024-8020179(Top 71%)11877(Top 74%)11877(Top 943%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

15732

Males

10694

M60-64

10694

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

16996

Males

11240

M60-64

11240

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

15732

Males

10694

M60-64

10694

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

14435

Males

10060

M60-64

10060

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

15157

Males

10403

M60-64

10403

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

13123

Males

9354

M60-64

9354

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12723

Males

9019

M60-64

9019

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

12584

Males

8816

M60-64

8816

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12082

Males

8417

M60-64

8417

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

11459

Males

8093

M60-64

8093

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12919

Males

8665

M60-64

8665

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

13755

Males

9033

M60-64

9033

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18156

Males

10901

M60-64

10901

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17404

Males

10544

M60-64

10544

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

20179

Males

11877

M60-64

11877

Passing Analysis

Category:
Athletes Passed
4554
Passed By
761
Net Change
+3793
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18654
5K → 10K85857+801#18654#17853
10K → 15K72620+706#17853#17147
15K → 20K7257+718#17147#16429
20K → Half6814+54#16429#16375
Half → 25K5374+533#16375#15842
25K → 30K64520+625#15842#15217
30K → 20M27618+258#15217#14959
20M → 21M23515+220#14959#14739
21M → 35K15612+144#14739#14595
35K → 23M16440+124#14595#14471
23M → 24M8033+47#14471#14424
24M → 40K42181-139#14424#14563
40K → 25.2M2161-40#14563#14603
25.2M → Finish21279-258#14603#14861
TOTALS4554761+3793
📊

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