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BOSTON MARATHON 2025

Jason Sanford

Bib: 1808•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 20%
Gender (Male)
#0 / 16105
Top 31%
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
19:33
Rank: #2412
Start → 5K
6:18/mi
19:33 split
10K· 6.21 mi
39:20
Rank: #2629 (-217)
5K → 10K
6:22/mi
19:47 split
15K· 9.32 mi
59:21
Rank: #2790 (-161)
10K → 15K
6:27/mi
20:01 split
20K· 12.43 mi
1:20:01
Rank: #3105 (-315)
15K → 20K
6:39/mi
20:40 split
Half· 13.11 mi
1:24:32
Rank: #3162 (-57)
20K → Half
6:37/mi
4:31 split
25K· 15.53 mi
1:41:18
Rank: #3521 (-359)
Half → 25K
6:55/mi
16:46 split
30K· 18.64 mi
2:04:14
Rank: #4037 (-516)
25K → 30K
7:23/mi
22:56 split
20M
2:14:36
Rank: #4347 (-310)
30K → 20M
7:38/mi
10:22 split
21M
2:22:55
Rank: #4649 (-302)
20M → 21M
8:19/mi
8:19 split
35K· 21.75 mi
2:28:30
Rank: #4798 (-149)
21M → 35K
7:28/mi
5:35 split
23M
2:38:16
Rank: #5059 (-261)
35K → 23M
7:48/mi
9:46 split
24M
2:46:09
Rank: #5260 (-201)
23M → 24M
7:53/mi
7:53 split
40K· 24.85 mi
2:53:08
Rank: #5389 (-129)
24M → 40K
8:10/mi
6:59 split
25.2M
2:56:15
Rank: #5429 (-40)
40K → 25.2M
9:02/mi
3:07 split
Finish· 26.22 mi
3:04:22
Rank: #5603 (-174)
25.2M → Finish
7:58/mi
8:07 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:32
Pace6:27 /mi
2nd Half
Distance13.11 mi
Time1:39:50
Pace7:37 /mi
📊Positive Split: 18.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:4919:336:1819:33
6:18
-
10K
6.21 mi10:40:3639:206:2019:47
6:22
+0:04
15K
9.32 mi11:00:3759:216:2220:01
6:27
+0:05
20K
12.43 mi11:21:171:20:016:2620:40
6:39
+0:12
Half
13.11 mi11:25:481:24:326:274:31
6:37
-0:02
25K
15.53 mi11:42:341:41:186:3116:46
6:55
+0:18
30K
18.64 mi12:05:302:04:146:4022:56
7:23
+0:28
20M
20.00 mi12:15:522:14:366:4410:22
7:38
+0:15
21M
21.00 mi12:24:112:22:556:488:19
8:19
+0:41
35K
21.75 mi12:29:462:28:306:505:35
7:28
-0:51
23M
23.00 mi12:39:322:38:166:539:46
7:48
+0:20
24M
24.00 mi12:47:252:46:096:557:53
7:53
+0:05
40K
24.85 mi12:54:242:53:086:586:59
8:10
+0:17
25.2M
25.20 mi12:57:312:56:157:003:07
9:02
+0:52
Finish
26.22 mi13:05:383:04:227:028:07
7:58
-1:04

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

6:18 /mi

Average Pace

7:02 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:18

55% of race

Time at Steady Pace

48:39

26% of race

Time at Slower Pace

34:25

19% of race

Average Pace: 7:02 /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 mi10:20:4919:336:1819:33
6:18
#2412
10K
6.21 mi10:40:3639:206:2019:47
6:22
#2629
15K
9.32 mi11:00:3759:216:2220:01
6:27
#2790
20K
12.43 mi11:21:171:20:016:2620:40
6:39
#3105
Half
13.11 mi11:25:481:24:326:274:31
6:37
#3162
25K
15.53 mi11:42:341:41:186:3116:46
6:55
#3521
30K
18.64 mi12:05:302:04:146:4022:56
7:23
#4037
20M
20.00 mi12:15:522:14:366:4410:22
7:38
#4347
21M
21.00 mi12:24:112:22:556:488:19
8:19
#4649
35K
21.75 mi12:29:462:28:306:505:35
7:28
#4798
23M
23.00 mi12:39:322:38:166:539:46
7:48
#5059
24M
24.00 mi12:47:252:46:096:557:53
7:53
#5260
40K
24.85 mi12:54:242:53:086:586:59
8:10
#5389
25.2M
25.20 mi12:57:312:56:157:003:07
9:02
#5429
Finish
26.22 mi13:05:383:04:227:028:07
7:58
#5603
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2412229822983209(Top 11%)3055(Top 19%)3055(Top 54%)
10K6.21 mi3.10 mi2629-2172504-2062504-2062853(Top 10%)2716(Top 17%)2716(Top 48%)
15K9.32 mi3.11 mi2790-1612659-1552659-1553209(Top 11%)3055(Top 19%)3055(Top 54%)
20K12.43 mi3.11 mi3105-3152959-3002959-3004047(Top 14%)3802(Top 24%)3802(Top 67%)
Half13.11 mi0.68 mi3162-573013-543013-544648(Top 16%)4341(Top 27%)4341(Top 77%)
25K15.53 mi2.42 mi3521-3593333-3203333-3205777(Top 20%)5221(Top 32%)5221(Top 93%)
30K18.64 mi3.11 mi4037-5163788-4553788-4556941(Top 24%)5933(Top 37%)5933(Top 105%)
20M20.00 mi1.36 mi4347-3104057-2694057-2697864(Top 28%)6351(Top 39%)6351(Top 113%)
21M21.00 mi1.00 mi4649-3024311-2544311-2549289(Top 33%)6973(Top 43%)6973(Top 124%)
35K21.75 mi0.75 mi4798-1494424-1134424-1138317(Top 29%)6481(Top 40%)6481(Top 115%)
23M23.00 mi1.25 mi5059-2614632-2084632-2088556(Top 30%)6463(Top 40%)6463(Top 115%)
24M24.00 mi1.00 mi5260-2014787-1554787-15510403(Top 37%)7370(Top 46%)7370(Top 131%)
40K24.85 mi0.85 mi5389-1294884-974884-9711317(Top 40%)7708(Top 48%)7708(Top 137%)
25.2M25.20 mi0.35 mi5429-404905-214905-2111913(Top 42%)7924(Top 49%)7924(Top 140%)
Finish26.22 mi1.02 mi5603-1745020-1155020-11512603(Top 44%)8321(Top 52%)8321(Top 147%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21story building
+97ft-345ft

Overall

3209

Males

3055

M18-39

3055

5K→10K

3.1 - 6.2 mi

Top 10%
×5story building
+79ft-138ft

Overall

2853

Males

2716

M18-39

2716

10K→15K

6.2 - 9.3 mi

Top 11%
×3story building
+67ft-78ft

Overall

3209

Males

3055

M18-39

3055

15K→20K

9.3 - 12.4 mi

Top 14%
×5story building
+106ft-86ft

Overall

4047

Males

3802

M18-39

3802

20K→Half

12.4 - 13.1 mi

Top 16%
×2story building
+19ft-37ft

Overall

4648

Males

4341

M18-39

4341

Half→25K

13.1 - 15.5 mi

Top 20%
×4story building
+66ft-88ft

Overall

5777

Males

5221

M18-39

5221

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6941

Males

5933

M18-39

5933

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

7864

Males

6351

M18-39

6351

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

9289

Males

6973

M18-39

6973

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

8317

Males

6481

M18-39

6481

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8556

Males

6463

M18-39

6463

23M→24M

23.0 - 24.0 mi

Top 37%
×6story building
+12ft-82ft

Overall

10403

Males

7370

M18-39

7370

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11317

Males

7708

M18-39

7708

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11913

Males

7924

M18-39

7924

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

12603

Males

8321

M18-39

8321

Passing Analysis

Category:
Athletes Passed
306
Passed By
3497
Net Change
-3191
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2412
5K → 10K46263-217#2412#2629
10K → 15K35196-161#2629#2790
15K → 20K23338-315#2790#3105
20K → Half562-57#3105#3162
Half → 25K12371-359#3162#3521
25K → 30K27543-516#3521#4037
30K → 20M17327-310#4037#4347
20M → 21M19321-302#4347#4649
21M → 35K24173-149#4649#4798
35K → 23M31292-261#4798#5059
23M → 24M15216-201#5059#5260
24M → 40K23152-129#5260#5389
40K → 25.2M1555-40#5389#5429
25.2M → Finish14188-174#5429#5603
TOTALS3063497-3191
📊

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