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BOSTON MARATHON 2025

Tyler Sanslow

Bib: 27112•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

Start
0:00:00
Race begins
5K· 3.11 mi
25:18
Rank: #17672
Start → 5K
25:18 | 8:09/mi
10K· 6.21 mi
49:11
Rank: #15824 (+1848)
5K → 10K
23:53 | 7:41/mi
15K· 9.32 mi
1:13:04
Rank: #14984 (+840)
10K → 15K
23:53 | 7:41/mi
20K· 12.43 mi
1:38:39
Rank: #15436 (-452)
15K → 20K
25:35 | 8:14/mi
Half· 13.11 mi
1:44:21
Rank: #15625 (-189)
20K → Half
5:42 | 8:21/mi
25K· 15.53 mi
2:05:15
Rank: #16041 (-416)
Half → 25K
20:54 | 8:37/mi
30K· 18.64 mi
2:34:26
Rank: #16737 (-696)
25K → 30K
29:11 | 9:24/mi
20M
2:47:44
Rank: #17056 (-319)
30K → 20M
13:18 | 9:47/mi
21M
2:57:45
Rank: #17124 (-68)
20M → 21M
10:01 | 10:01/mi
35K· 21.75 mi
3:04:49
Rank: #17262 (-138)
21M → 35K
7:04 | 9:27/mi
23M
3:17:44
Rank: #17642 (-380)
35K → 23M
12:55 | 10:19/mi
24M
3:26:58
Rank: #17674 (-32)
23M → 24M
9:14 | 9:14/mi
40K· 24.85 mi
3:34:55
Rank: #17681 (-7)
24M → 40K
7:57 | 9:18/mi
25.2M
3:38:18
Rank: #17641 (+40)
40K → 25.2M
3:23 | 9:49/mi
Finish· 26.22 mi
3:46:25
Rank: #17471 (+170)
25.2M → Finish
8:07 | 7:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:21
Pace7:58 /mi
2nd Half
Distance13.11 mi
Time2:02:04
Pace9:19 /mi
📊Positive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:5825:188:0925:18
8:09
-
10K
6.21 mi12:05:5149:117:5523:53
7:41
-0:28
15K
9.32 mi12:29:441:13:047:5023:53
7:41
0:00
20K
12.43 mi12:55:191:38:397:5625:35
8:14
+0:33
Half
13.11 mi13:01:011:44:217:585:42
8:21
+0:07
25K
15.53 mi13:21:552:05:158:0420:54
8:37
+0:16
30K
18.64 mi13:51:062:34:268:1729:11
9:24
+0:47
20M
20.00 mi14:04:242:47:448:2313:18
9:47
+0:23
21M
21.00 mi14:14:252:57:458:2810:01
10:01
+0:14
35K
21.75 mi14:21:293:04:498:307:04
9:27
-0:34
23M
23.00 mi14:34:243:17:448:3612:55
10:19
+0:52
24M
24.00 mi14:43:383:26:588:379:14
9:14
-1:05
40K
24.85 mi14:51:353:34:558:397:57
9:18
+0:04
25.2M
25.20 mi14:54:583:38:188:403:23
9:49
+0:31
Finish
26.22 mi15:03:053:46:258:398:07
7:58
-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

7:41 /mi

Average Pace

8:39 /mi

Slowest Pace

10:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:22

59% of race

Time at Steady Pace

53:26

24% of race

Time at Slower Pace

39:37

17% of race

Average Pace: 8:38 /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 mi11:41:5825:188:0925:18
8:09
#17672
10K
6.21 mi12:05:5149:117:5523:53
7:41
#15824
15K
9.32 mi12:29:441:13:047:5023:53
7:41
#14984
20K
12.43 mi12:55:191:38:397:5625:35
8:14
#15436
Half
13.11 mi13:01:011:44:217:585:42
8:21
#15625
25K
15.53 mi13:21:552:05:158:0420:54
8:37
#16041
30K
18.64 mi13:51:062:34:268:1729:11
9:24
#16737
20M
20.00 mi14:04:242:47:448:2313:18
9:47
#17056
21M
21.00 mi14:14:252:57:458:2810:01
10:01
#17124
35K
21.75 mi14:21:293:04:498:307:04
9:27
#17262
23M
23.00 mi14:34:243:17:448:3612:55
10:19
#17642
24M
24.00 mi14:43:383:26:588:379:14
9:14
#17674
40K
24.85 mi14:51:353:34:558:397:57
9:18
#17681
25.2M
25.20 mi14:54:583:38:188:403:23
9:49
#17641
Finish
26.22 mi15:03:053:46:258:398:07
7:58
#17471
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi17672114831148313370(Top 47%)9673(Top 60%)9673(Top 171%)
10K6.21 mi3.10 mi15824+184810748+73510748+73513763(Top 48%)9913(Top 62%)9913(Top 176%)
15K9.32 mi3.11 mi14984+84010395+35310395+35313370(Top 47%)9673(Top 60%)9673(Top 171%)
20K12.43 mi3.11 mi15436-45210568-17310568-17316524(Top 58%)10976(Top 68%)10976(Top 195%)
Half13.11 mi0.68 mi15625-18910635-6710635-6718240(Top 64%)11718(Top 73%)11718(Top 208%)
25K15.53 mi2.42 mi16041-41610808-17310808-17317907(Top 63%)11477(Top 71%)11477(Top 203%)
30K18.64 mi3.11 mi16737-69611027-21911027-21919496(Top 69%)12055(Top 75%)12055(Top 214%)
20M20.00 mi1.36 mi17056-31911126-9911126-9920238(Top 71%)12248(Top 76%)12248(Top 217%)
21M21.00 mi1.00 mi17124-6811124+211124+218338(Top 65%)11313(Top 70%)11313(Top 201%)
35K21.75 mi0.75 mi17262-13811158-3411158-3420110(Top 71%)12013(Top 75%)12013(Top 213%)
23M23.00 mi1.25 mi17642-38011290-13211290-13221456(Top 76%)12607(Top 78%)12607(Top 223%)
24M24.00 mi1.00 mi17674-3211278+1211278+1218485(Top 65%)11149(Top 69%)11149(Top 198%)
40K24.85 mi0.85 mi17681-711252+2611252+2617829(Top 63%)10734(Top 67%)10734(Top 190%)
25.2M25.20 mi0.35 mi17641+4011228+2411228+2416107(Top 57%)9932(Top 62%)9932(Top 176%)
Finish26.22 mi1.02 mi17471+17011128+10011128+10012650(Top 45%)8368(Top 52%)8368(Top 148%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21stories
+97ft-345ft

Overall

13370

Males

9673

M18-39

9673

5K→10K

3.1 - 6.2 mi

Top 48%
×5stories
+79ft-138ft

Overall

13763

Males

9913

M18-39

9913

10K→15K

6.2 - 9.3 mi

Top 47%
×3stories
+67ft-78ft

Overall

13370

Males

9673

M18-39

9673

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

16524

Males

10976

M18-39

10976

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

18240

Males

11718

M18-39

11718

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

17907

Males

11477

M18-39

11477

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

19496

Males

12055

M18-39

12055

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20238

Males

12248

M18-39

12248

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

18338

Males

11313

M18-39

11313

21M→35K

21.0 - 21.8 mi

Top 71%
×7stories
+17ft-86ft

Overall

20110

Males

12013

M18-39

12013

35K→23M

21.8 - 23.0 mi

Top 76%
×5stories
+23ft-63ft

Overall

21456

Males

12607

M18-39

12607

23M→24M

23.0 - 24.0 mi

Top 65%
×6stories
+12ft-82ft

Overall

18485

Males

11149

M18-39

11149

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17829

Males

10734

M18-39

10734

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16107

Males

9932

M18-39

9932

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

12650

Males

8368

M18-39

8368

Passing Analysis

Category:
Athletes Passed
3526
Passed By
3325
Net Change
+201
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17672
5K → 10K186113+1848#17672#15824
10K → 15K8455+840#15824#14984
15K → 20K93545-452#14984#15436
20K → Half5194-189#15436#15625
Half → 25K76492-416#15625#16041
25K → 30K83779-696#16041#16737
30K → 20M32351-319#16737#17056
20M → 21M96164-68#17056#17124
21M → 35K36174-138#17124#17262
35K → 23M39419-380#17262#17642
23M → 24M70102-32#17642#17674
24M → 40K6067-7#17674#17681
40K → 25.2M5313+40#17681#17641
25.2M → Finish1777+170#17641#17471
TOTALS35263325+201
📊

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