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BOSTON MARATHON 2025

John Slyer

Bib: 17752•M

NY

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
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:32
Rank: #12897
Start → 5K
23:32 | 7:34/mi
10K· 6.21 mi
47:25
Rank: #13316 (-419)
5K → 10K
23:53 | 7:41/mi
15K· 9.32 mi
1:11:44
Rank: #13712 (-396)
10K → 15K
24:19 | 7:50/mi
20K· 12.43 mi
1:36:56
Rank: #14245 (-533)
15K → 20K
25:12 | 8:07/mi
Half· 13.11 mi
1:42:32
Rank: #14406 (-161)
20K → Half
5:36 | 8:12/mi
25K· 15.53 mi
2:03:35
Rank: #15204 (-798)
Half → 25K
21:03 | 8:41/mi
30K· 18.64 mi
2:31:58
Rank: #15883 (-679)
25K → 30K
28:23 | 9:08/mi
20M
2:45:18
Rank: #16280 (-397)
30K → 20M
13:20 | 9:49/mi
21M
2:56:49
Rank: #16831 (-551)
20M → 21M
11:31 | 11:31/mi
35K· 21.75 mi
3:06:11
Rank: #17674 (-843)
21M → 35K
9:22 | 12:31/mi
23M
3:22:43
Rank: #18952 (-1278)
35K → 23M
16:32 | 13:12/mi
24M
3:37:19
Rank: #20072 (-1120)
23M → 24M
14:36 | 14:36/mi
40K· 24.85 mi
3:50:07
Rank: #20852 (-780)
24M → 40K
12:48 | 14:58/mi
25.2M
3:55:49
Rank: #21119 (-267)
40K → 25.2M
5:42 | 16:32/mi
Finish· 26.22 mi
4:09:44
Rank: #21706 (-587)
25.2M → Finish
13:55 | 13:39/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:32
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time2:27:12
Pace11:14 /mi
📊Positive Split: 43.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0123:327:3423:32
7:34
-
10K
6.21 mi11:37:5447:257:3823:53
7:41
+0:07
15K
9.32 mi12:02:131:11:447:4224:19
7:50
+0:09
20K
12.43 mi12:27:251:36:567:4825:12
8:07
+0:17
Half
13.11 mi12:33:011:42:327:495:36
8:12
+0:05
25K
15.53 mi12:54:042:03:357:5721:03
8:41
+0:29
30K
18.64 mi13:22:272:31:588:0928:23
9:08
+0:27
20M
20.00 mi13:35:472:45:188:1613:20
9:49
+0:41
21M
21.00 mi13:47:182:56:498:2511:31
11:31
+1:42
35K
21.75 mi13:56:403:06:118:349:22
12:31
+1:00
23M
23.00 mi14:13:123:22:438:4916:32
13:12
+0:41
24M
24.00 mi14:27:483:37:199:0314:36
14:36
+1:24
40K
24.85 mi14:40:363:50:079:1612:48
14:58
+0:22
25.2M
25.20 mi14:46:183:55:499:215:42
16:32
+1:34
Finish
26.22 mi15:00:134:09:449:3213:55
13:39
-2:53

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

7:34 /mi

Average Pace

9:32 /mi

Slowest Pace

16:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:32

41% of race

Time at Steady Pace

1:02:46

25% of race

Time at Slower Pace

1:24:26

34% of race

Average Pace: 9:31 /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 mi11:14:0123:327:3423:32
7:34
#12897
10K
6.21 mi11:37:5447:257:3823:53
7:41
#13316
15K
9.32 mi12:02:131:11:447:4224:19
7:50
#13712
20K
12.43 mi12:27:251:36:567:4825:12
8:07
#14245
Half
13.11 mi12:33:011:42:327:495:36
8:12
#14406
25K
15.53 mi12:54:042:03:357:5721:03
8:41
#15204
30K
18.64 mi13:22:272:31:588:0928:23
9:08
#15883
20M
20.00 mi13:35:472:45:188:1613:20
9:49
#16280
21M
21.00 mi13:47:182:56:498:2511:31
11:31
#16831
35K
21.75 mi13:56:403:06:118:349:22
12:31
#17674
23M
23.00 mi14:13:123:22:438:4916:32
13:12
#18952
24M
24.00 mi14:27:483:37:199:0314:36
14:36
#20072
40K
24.85 mi14:40:363:50:079:1612:48
14:58
#20852
25.2M
25.20 mi14:46:183:55:499:215:42
16:32
#21119
Finish
26.22 mi15:00:134:09:449:3213:55
13:39
#21706
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi128979604960414605(Top 51%)10204(Top 63%)10204(Top 810%)
10K6.21 mi3.10 mi13316-4199742-1389742-13813765(Top 48%)9915(Top 62%)9915(Top 788%)
15K9.32 mi3.11 mi13712-3969871-1299871-12914605(Top 51%)10204(Top 63%)10204(Top 810%)
20K12.43 mi3.11 mi14245-53310059-18810059-18815713(Top 55%)10630(Top 66%)10630(Top 844%)
Half13.11 mi0.68 mi14406-16110128-6910128-6917321(Top 61%)11348(Top 70%)11348(Top 901%)
25K15.53 mi2.42 mi15204-79810436-30810436-30818281(Top 64%)11659(Top 72%)11659(Top 926%)
30K18.64 mi3.11 mi15883-67910680-24410680-24418331(Top 65%)11529(Top 72%)11529(Top 916%)
20M20.00 mi1.36 mi16280-39710811-13110811-13120333(Top 72%)12299(Top 76%)12299(Top 977%)
21M21.00 mi1.00 mi16831-55111010-19911010-19922640(Top 80%)13260(Top 82%)13260(Top 1053%)
35K21.75 mi0.75 mi17674-84311349-33911349-33926481(Top 93%)15085(Top 94%)15085(Top 1198%)
23M23.00 mi1.25 mi18952-127811875-52611875-52626616(Top 94%)15140(Top 94%)15140(Top 1203%)
24M24.00 mi1.00 mi20072-112012341-46612341-46627918(Top 98%)15780(Top 98%)15780(Top 1253%)
40K24.85 mi0.85 mi20852-78012680-33912680-33927750(Top 98%)15691(Top 97%)15691(Top 1246%)
25.2M25.20 mi0.35 mi21119-26712790-11012790-11027927(Top 98%)15778(Top 98%)15778(Top 1253%)
Finish26.22 mi1.02 mi21706-58713032-24213032-24227916(Top 98%)15791(Top 98%)15791(Top 1254%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

14605

Males

10204

M60-64

10204

5K→10K

3.1 - 6.2 mi

Top 48%
×5stories
+79ft-138ft

Overall

13765

Males

9915

M60-64

9915

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

14605

Males

10204

M60-64

10204

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

15713

Males

10630

M60-64

10630

20K→Half

12.4 - 13.1 mi

Top 61%
×2stories
+19ft-37ft

Overall

17321

Males

11348

M60-64

11348

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

18281

Males

11659

M60-64

11659

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

18331

Males

11529

M60-64

11529

30K→20M

18.6 - 20.0 mi

Top 72%
×5stories
+64ft-50ft

Overall

20333

Males

12299

M60-64

12299

20M→21M

20.0 - 21.0 mi

Top 80%
×8stories
+106ft-24ft

Overall

22640

Males

13260

M60-64

13260

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

26481

Males

15085

M60-64

15085

35K→23M

21.8 - 23.0 mi

Top 94%
×5stories
+23ft-63ft

Overall

26616

Males

15140

M60-64

15140

23M→24M

23.0 - 24.0 mi

Top 98%
×6stories
+12ft-82ft

Overall

27918

Males

15780

M60-64

15780

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

27750

Males

15691

M60-64

15691

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

27927

Males

15778

M60-64

15778

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2stories
+22ft-21ft

Overall

27916

Males

15791

M60-64

15791

Passing Analysis

Category:
Athletes Passed
549
Passed By
9358
Net Change
-8809
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12897
5K → 10K135554-419#12897#13316
10K → 15K100496-396#13316#13712
15K → 20K95628-533#13712#14245
20K → Half3164-161#14245#14406
Half → 25K42840-798#14406#15204
25K → 30K92771-679#15204#15883
30K → 20M36433-397#15883#16280
20M → 21M24575-551#16280#16831
21M → 35K4847-843#16831#17674
35K → 23M101288-1278#17674#18952
23M → 24M11121-1120#18952#20072
24M → 40K2782-780#20072#20852
40K → 25.2M3270-267#20852#21119
25.2M → Finish2589-587#21119#21706
TOTALS5499358-8809
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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