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BOSTON MARATHON 2025

Todd Leff

Bib: 24934•M

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M65-69)
#0 / 639
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:31
Rank: #21790
Start → 5K
27:31 | 8:51/mi
10K· 6.21 mi
54:52
Rank: #21599 (+191)
5K → 10K
27:21 | 8:48/mi
15K· 9.32 mi
1:22:26
Rank: #21504 (+95)
10K → 15K
27:34 | 8:52/mi
20K· 12.43 mi
1:50:46
Rank: #21517 (-13)
15K → 20K
28:20 | 9:07/mi
Half· 13.11 mi
1:56:55
Rank: #21531 (-14)
20K → Half
6:09 | 9:01/mi
25K· 15.53 mi
2:20:16
Rank: #21694 (-163)
Half → 25K
23:21 | 9:38/mi
30K· 18.64 mi
2:51:41
Rank: #21801 (-107)
25K → 30K
31:25 | 10:07/mi
20M
3:05:00
Rank: #21684 (+117)
30K → 20M
13:19 | 9:48/mi
21M
3:15:59
Rank: #21659 (+25)
20M → 21M
10:59 | 10:59/mi
35K· 21.75 mi
3:23:40
Rank: #21701 (-42)
21M → 35K
7:41 | 10:16/mi
23M
3:36:26
Rank: #21653 (+48)
35K → 23M
12:46 | 10:12/mi
24M
3:46:35
Rank: #21660 (-7)
23M → 24M
10:09 | 10:09/mi
40K· 24.85 mi
3:55:28
Rank: #21656 (+4)
24M → 40K
8:53 | 10:23/mi
25.2M
3:59:41
Rank: #21697 (-41)
40K → 25.2M
4:13 | 12:14/mi
Finish· 26.22 mi
4:09:37
Rank: #21685 (+12)
25.2M → Finish
9:56 | 9:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:55
Pace8:55 /mi
2nd Half
Distance13.11 mi
Time2:12:42
Pace10:07 /mi
📊Positive Split: 13.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:2727:318:5127:31
8:51
-
10K
6.21 mi11:54:4854:528:5027:21
8:48
-0:03
15K
9.32 mi12:22:221:22:268:5127:34
8:52
+0:04
20K
12.43 mi12:50:421:50:468:5528:20
9:07
+0:15
Half
13.11 mi12:56:511:56:558:556:09
9:01
-0:06
25K
15.53 mi13:20:122:20:169:0223:21
9:38
+0:37
30K
18.64 mi13:51:372:51:419:1331:25
10:07
+0:29
20M
20.00 mi14:04:563:05:009:1513:19
9:48
-0:19
21M
21.00 mi14:15:553:15:599:2010:59
10:59
+1:11
35K
21.75 mi14:23:363:23:409:227:41
10:16
-0:43
23M
23.00 mi14:36:223:36:269:2512:46
10:12
-0:04
24M
24.00 mi14:46:313:46:359:2610:09
10:09
-0:03
40K
24.85 mi14:55:243:55:289:288:53
10:23
+0:14
25.2M
25.20 mi14:59:373:59:419:314:13
12:14
+1:51
Finish
26.22 mi15:09:334:09:379:329:56
9:45
-2:29

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

8:48 /mi

Average Pace

9:32 /mi

Slowest Pace

12:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:55

47% of race

Time at Steady Pace

1:40:56

40% of race

Time at Slower Pace

31:46

13% 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 mi11:27:2727:318:5127:31
8:51
#21790
10K
6.21 mi11:54:4854:528:5027:21
8:48
#21599
15K
9.32 mi12:22:221:22:268:5127:34
8:52
#21504
20K
12.43 mi12:50:421:50:468:5528:20
9:07
#21517
Half
13.11 mi12:56:511:56:558:556:09
9:01
#21531
25K
15.53 mi13:20:122:20:169:0223:21
9:38
#21694
30K
18.64 mi13:51:372:51:419:1331:25
10:07
#21801
20M
20.00 mi14:04:563:05:009:1513:19
9:48
#21684
21M
21.00 mi14:15:553:15:599:2010:59
10:59
#21659
35K
21.75 mi14:23:363:23:409:227:41
10:16
#21701
23M
23.00 mi14:36:223:36:269:2512:46
10:12
#21653
24M
24.00 mi14:46:313:46:359:2610:09
10:09
#21660
40K
24.85 mi14:55:243:55:289:288:53
10:23
#21656
25.2M
25.20 mi14:59:373:59:419:314:13
12:14
#21697
Finish
26.22 mi15:09:334:09:379:329:56
9:45
#21685
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi21790132211322121407(Top 75%)13128(Top 82%)13128(Top 2054%)
10K6.21 mi3.10 mi21599+19113152+6913152+6921410(Top 75%)13094(Top 81%)13094(Top 2049%)
15K9.32 mi3.11 mi21504+9513138+1413138+1421407(Top 75%)13128(Top 82%)13128(Top 2054%)
20K12.43 mi3.11 mi21517-1313136+213136+221538(Top 76%)13145(Top 82%)13145(Top 2057%)
Half13.11 mi0.68 mi21531-1413137-113137-121865(Top 77%)13289(Top 83%)13289(Top 2080%)
25K15.53 mi2.42 mi21694-16313197-6013197-6022284(Top 78%)13418(Top 83%)13418(Top 2100%)
30K18.64 mi3.11 mi21801-10713230-3313230-3321936(Top 77%)13131(Top 82%)13131(Top 2055%)
20M20.00 mi1.36 mi21684+11713164+6613164+6620297(Top 71%)12284(Top 76%)12284(Top 1922%)
21M21.00 mi1.00 mi21659+2513123+4113123+4121338(Top 75%)12667(Top 79%)12667(Top 1982%)
35K21.75 mi0.75 mi21701-4213133-1013133-1022600(Top 80%)13205(Top 82%)13205(Top 2067%)
23M23.00 mi1.25 mi21653+4813076+5713076+5721094(Top 74%)12436(Top 77%)12436(Top 1946%)
24M24.00 mi1.00 mi21660-713055+2113055+2121794(Top 77%)12709(Top 79%)12709(Top 1989%)
40K24.85 mi0.85 mi21656+413028+2713028+2721614(Top 76%)12568(Top 78%)12568(Top 1967%)
25.2M25.20 mi0.35 mi21697-4113034-613034-623640(Top 83%)13580(Top 84%)13580(Top 2125%)
Finish26.22 mi1.02 mi21685+1213022+1213022+1222071(Top 78%)12824(Top 80%)12824(Top 2007%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

21407

Males

13128

M65-69

13128

5K→10K

3.1 - 6.2 mi

Top 75%
×5stories
+79ft-138ft

Overall

21410

Males

13094

M65-69

13094

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

21407

Males

13128

M65-69

13128

15K→20K

9.3 - 12.4 mi

Top 76%
×5stories
+106ft-86ft

Overall

21538

Males

13145

M65-69

13145

20K→Half

12.4 - 13.1 mi

Top 77%
×2stories
+19ft-37ft

Overall

21865

Males

13289

M65-69

13289

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22284

Males

13418

M65-69

13418

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

21936

Males

13131

M65-69

13131

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20297

Males

12284

M65-69

12284

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

21338

Males

12667

M65-69

12667

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

22600

Males

13205

M65-69

13205

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

21094

Males

12436

M65-69

12436

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

21794

Males

12709

M65-69

12709

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21614

Males

12568

M65-69

12568

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23640

Males

13580

M65-69

13580

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

22071

Males

12824

M65-69

12824

Passing Analysis

Category:
Athletes Passed
1672
Passed By
1567
Net Change
+105
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21790
5K → 10K378187+191#21790#21599
10K → 15K255160+95#21599#21504
15K → 20K193206-13#21504#21517
20K → Half2640-14#21517#21531
Half → 25K102265-163#21531#21694
25K → 30K156263-107#21694#21801
30K → 20M15437+117#21801#21684
20M → 21M9974+25#21684#21659
21M → 35K3274-42#21659#21701
35K → 23M10355+48#21701#21653
23M → 24M5057-7#21653#21660
24M → 40K6157+4#21660#21656
40K → 25.2M1152-41#21656#21697
25.2M → Finish5240+12#21697#21685
TOTALS16721567+105
📊

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