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BOSTON MARATHON 2025

William (kemp) Schanlaber

NH

Bib: 17473 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:51/mi
24:22
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:58/mi
49:08
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:04/mi
1:14:13
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:24/mi
1:40:20
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:12/mi
1:45:56
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:24/mi
2:06:18
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:07/mi
2:34:39
↑ 181↓ 1480.2%
138 ft elev
20M
10:23/mi
2:48:45
↑ 64↓ 500.2%
148 ft elev
21M
9:55/mi
2:58:40
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:29/mi
3:05:46
↑ 17↓ 861.7%
156 ft elev
23M
10:23/mi
3:18:46
↑ 23↓ 630.6%
116 ft elev
24M
10:41/mi
3:29:27
↓ 821.3%
34 ft elev
40K· 24.85 mi
11:18/mi
3:39:07
↓ 200.3%
20 ft elev
25.2M
12:19/mi
3:43:22
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
11:45/mi
3:55:20
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:56
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time2:09:24
Pace9:52 /mi
📊Positive Split: 22.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5124:227:5124:22
7:51
-
10K
6.21 mi11:39:3749:087:5424:46
7:58
+0:07
15K
9.32 mi12:04:421:14:137:5825:05
8:04
+0:06
20K
12.43 mi12:30:491:40:208:0426:07
8:24
+0:20
Half
13.11 mi12:36:251:45:568:055:36
8:12
-0:12
25K
15.53 mi12:56:472:06:188:0820:22
8:24
+0:12
30K
18.64 mi13:25:082:34:398:1828:21
9:07
+0:43
20M
20.00 mi13:39:142:48:458:2614:06
10:23
+1:16
21M
21.00 mi13:49:092:58:408:309:55
9:55
-0:28
35K
21.75 mi13:56:153:05:468:337:06
9:29
-0:26
23M
23.00 mi14:09:153:18:468:3913:00
10:23
+0:54
24M
24.00 mi14:19:563:29:278:4410:41
10:41
+0:18
40K
24.85 mi14:29:363:39:078:499:40
11:18
+0:37
25.2M
25.20 mi14:33:513:43:228:524:15
12:19
+1:01
Finish
26.22 mi14:45:493:55:208:5911:58
11:45
-0:34

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

7:51 /mi

Average Pace

8:59 /mi

Slowest Pace

12:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:18

54% of race

Time at Steady Pace

45:22

19% of race

Time at Slower Pace

1:03:40

27% of race

Average Pace: 8:59 /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 mi11:14:5124:227:5124:22
7:51
#15195
10K
6.21 mi11:39:3749:087:5424:46
7:58
#15748
15K
9.32 mi12:04:421:14:137:5825:05
8:04
#16031
20K
12.43 mi12:30:491:40:208:0426:07
8:24
#16483
Half
13.11 mi12:36:251:45:568:055:36
8:12
#16539
25K
15.53 mi12:56:472:06:188:0820:22
8:24
#16513
30K
18.64 mi13:25:082:34:398:1828:21
9:07
#16816
20M
20.00 mi13:39:142:48:458:2614:06
10:23
#17373
21M
21.00 mi13:49:092:58:408:309:55
9:55
#17418
35K
21.75 mi13:56:153:05:468:337:06
9:29
#17554
23M
23.00 mi14:09:153:18:468:3913:00
10:23
#17932
24M
24.00 mi14:19:563:29:278:4410:41
10:41
#18302
40K
24.85 mi14:29:363:39:078:499:40
11:18
#18716
25.2M
25.20 mi14:33:513:43:228:524:15
12:19
#18851
Finish
26.22 mi14:45:493:55:208:5911:58
11:45
#19407
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi15195105051050516568(Top 58%)11042(Top 69%)11042(Top 670%)
10K6.21 mi3.10 mi15748-55310715-21010715-21016237(Top 57%)10925(Top 68%)10925(Top 663%)
15K9.32 mi3.11 mi16031-28310824-10910824-10916568(Top 58%)11042(Top 69%)11042(Top 670%)
20K12.43 mi3.11 mi16483-45211012-18811012-18817585(Top 62%)11437(Top 71%)11437(Top 694%)
Half13.11 mi0.68 mi16539-5611032-2011032-2017315(Top 61%)11342(Top 70%)11342(Top 688%)
25K15.53 mi2.42 mi16513+2610999+3310999+3316576(Top 58%)10914(Top 68%)10914(Top 662%)
30K18.64 mi3.11 mi16816-30311059-6011059-6018285(Top 64%)11502(Top 71%)11502(Top 698%)
20M20.00 mi1.36 mi17373-55711258-19911258-19922075(Top 78%)13081(Top 81%)13081(Top 794%)
21M21.00 mi1.00 mi17418-4511245+1311245+1317968(Top 63%)11150(Top 69%)11150(Top 677%)
35K21.75 mi0.75 mi17554-13611287-4211287-4220283(Top 71%)12103(Top 75%)12103(Top 734%)
23M23.00 mi1.25 mi17932-37811426-13911426-13921678(Top 76%)12713(Top 79%)12713(Top 771%)
24M24.00 mi1.00 mi18302-37011564-13811564-13823265(Top 82%)13436(Top 83%)13436(Top 815%)
40K24.85 mi0.85 mi18716-41411720-15611720-15623761(Top 84%)13639(Top 85%)13639(Top 828%)
25.2M25.20 mi0.35 mi18851-13511779-5911779-5923826(Top 84%)13671(Top 85%)13671(Top 830%)
Finish26.22 mi1.02 mi19407-55611996-21711996-21726468(Top 93%)15028(Top 93%)15028(Top 912%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

16568

Males

11042

M55-59

11042

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16237

Males

10925

M55-59

10925

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

16568

Males

11042

M55-59

11042

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

17585

Males

11437

M55-59

11437

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

17315

Males

11342

M55-59

11342

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16576

Males

10914

M55-59

10914

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18285

Males

11502

M55-59

11502

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

22075

Males

13081

M55-59

13081

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

17968

Males

11150

M55-59

11150

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

20283

Males

12103

M55-59

12103

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

21678

Males

12713

M55-59

12713

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23265

Males

13436

M55-59

13436

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23761

Males

13639

M55-59

13639

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

23826

Males

13671

M55-59

13671

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2story building
+22ft-21ft

Overall

26468

Males

15028

M55-59

15028

Passing Analysis

Category:
Athletes Passed
913
Passed By
5125
Net Change
-4212
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15195
5K → 10K132685-553#15195#15748
10K → 15K125408-283#15748#16031
15K → 20K94546-452#16031#16483
20K → Half1571-56#16483#16539
Half → 25K171145+26#16539#16513
25K → 30K139442-303#16513#16816
30K → 20M24581-557#16816#17373
20M → 21M89134-45#17373#17418
21M → 35K39175-136#17418#17554
35K → 23M37415-378#17554#17932
23M → 24M24394-370#17932#18302
24M → 40K15429-414#18302#18716
40K → 25.2M4139-135#18716#18851
25.2M → Finish5561-556#18851#19407
TOTALS9135125-4212
📊

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