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BOSTON MARATHON 2025

David Grosskurth

Bib: 24382•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 (M65-69)
#0 / 639
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:06/mi
28:16
↑ 97↓ 3451.5%
10K· 6.21 mi
9:03/mi
56:23
↑ 79↓ 1380.4%
15K· 9.32 mi
9:05/mi
1:24:37
↑ 67↓ 78
20K· 12.43 mi
9:14/mi
1:53:18
↑ 106↓ 860.1%
Half· 13.11 mi
8:59/mi
1:59:26
↑ 19↓ 370.5%
25K· 15.53 mi
9:20/mi
2:22:04
↑ 66↓ 880.2%
30K· 18.64 mi
9:34/mi
2:51:48
↑ 181↓ 1480.2%
20M
9:41/mi
3:04:57
↑ 64↓ 500.2%
21M
10:20/mi
3:15:17
↑ 106↓ 241.6%
35K· 21.75 mi
8:53/mi
3:21:56
↑ 17↓ 861.7%
23M
9:26/mi
3:33:45
↑ 23↓ 630.6%
24M
9:39/mi
3:43:24
↓ 821.3%
40K· 24.85 mi
10:00/mi
3:51:57
↓ 200.3%
25.2M
11:07/mi
3:55:47
↑ 13↓ 160.2%
Finish· 26.22 mi
10:16/mi
4:06:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:26
Pace9:07 /mi
2nd Half
Distance13.11 mi
Time2:06:49
Pace9:40 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:3828:169:0628:16
9:06
-
10K
6.21 mi11:54:4556:239:0428:07
9:03
-0:03
15K
9.32 mi12:22:591:24:379:0528:14
9:05
+0:02
20K
12.43 mi12:51:401:53:189:0728:41
9:14
+0:09
Half
13.11 mi12:57:481:59:269:076:08
8:59
-0:15
25K
15.53 mi13:20:262:22:049:0922:38
9:20
+0:21
30K
18.64 mi13:50:102:51:489:1329:44
9:34
+0:14
20M
20.00 mi14:03:193:04:579:1513:09
9:41
+0:07
21M
21.00 mi14:13:393:15:179:1810:20
10:20
+0:39
35K
21.75 mi14:20:183:21:569:176:39
8:53
-1:27
23M
23.00 mi14:32:073:33:459:1811:49
9:26
+0:33
24M
24.00 mi14:41:463:43:249:199:39
9:39
+0:13
40K
24.85 mi14:50:193:51:579:208:33
10:00
+0:21
25.2M
25.20 mi14:54:093:55:479:213:50
11:07
+1:07
Finish
26.22 mi15:04:374:06:159:2410:28
10:16
-0:51

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

8:53 /mi

Average Pace

9:24 /mi

Slowest Pace

11:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:24

40% of race

Time at Steady Pace

1:55:40

47% of race

Time at Slower Pace

33:11

13% of race

Average Pace: 9:24 /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 mi11:26:3828:169:0628:16
9:06
#22838
10K
6.21 mi11:54:4556:239:0428:07
9:03
#22719
15K
9.32 mi12:22:591:24:379:0528:14
9:05
#22613
20K
12.43 mi12:51:401:53:189:0728:41
9:14
#22430
Half
13.11 mi12:57:481:59:269:076:08
8:59
#22380
25K
15.53 mi13:20:262:22:049:0922:38
9:20
#22215
30K
18.64 mi13:50:102:51:489:1329:44
9:34
#21828
20M
20.00 mi14:03:193:04:579:1513:09
9:41
#21676
21M
21.00 mi14:13:393:15:179:1810:20
10:20
#21529
35K
21.75 mi14:20:183:21:569:176:39
8:53
#21394
23M
23.00 mi14:32:073:33:459:1811:49
9:26
#21200
24M
24.00 mi14:41:463:43:249:199:39
9:39
#21164
40K
24.85 mi14:50:193:51:579:208:33
10:00
#21125
25.2M
25.20 mi14:54:093:55:479:213:50
11:07
#21113
Finish
26.22 mi15:04:374:06:159:2410:28
10:16
#21227
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi22838136841368422400(Top 79%)13560(Top 84%)13560(Top 2122%)
10K6.21 mi3.10 mi22719+11913654+3013654+3022600(Top 80%)13616(Top 85%)13616(Top 2131%)
15K9.32 mi3.11 mi22613+10613634+2013634+2022400(Top 79%)13560(Top 84%)13560(Top 2122%)
20K12.43 mi3.11 mi22430+18313539+9513539+9522007(Top 77%)13363(Top 83%)13363(Top 2091%)
Half13.11 mi0.68 mi22380+5013509+3013509+3021751(Top 77%)13239(Top 82%)13239(Top 2072%)
25K15.53 mi2.42 mi22215+16513437+7213437+7221310(Top 75%)12991(Top 81%)12991(Top 2033%)
30K18.64 mi3.11 mi21828+38713245+19213245+19220222(Top 71%)12395(Top 77%)12395(Top 1940%)
20M20.00 mi1.36 mi21676+15213159+8613159+8619860(Top 70%)12104(Top 75%)12104(Top 1894%)
21M21.00 mi1.00 mi21529+14713064+9513064+9519484(Top 69%)11828(Top 73%)11828(Top 1851%)
35K21.75 mi0.75 mi21394+13512992+7212992+7217701(Top 62%)10927(Top 68%)10927(Top 1710%)
23M23.00 mi1.25 mi21200+19412876+11612876+11618408(Top 65%)11178(Top 69%)11178(Top 1749%)
24M24.00 mi1.00 mi21164+3612836+4012836+4020189(Top 71%)11961(Top 74%)11961(Top 1872%)
40K24.85 mi0.85 mi21125+3912800+3612800+3620460(Top 72%)12025(Top 75%)12025(Top 1882%)
25.2M25.20 mi0.35 mi21113+1212787+1312787+1320968(Top 74%)12276(Top 76%)12276(Top 1921%)
Finish26.22 mi1.02 mi21227-11412824-3712824-3723714(Top 83%)13619(Top 85%)13619(Top 2131%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

22400

Males

13560

M65-69

13560

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

22600

Males

13616

M65-69

13616

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

22400

Males

13560

M65-69

13560

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

22007

Males

13363

M65-69

13363

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

21751

Males

13239

M65-69

13239

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

21310

Males

12991

M65-69

12991

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

20222

Males

12395

M65-69

12395

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

19860

Males

12104

M65-69

12104

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

19484

Males

11828

M65-69

11828

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

17701

Males

10927

M65-69

10927

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

18408

Males

11178

M65-69

11178

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20189

Males

11961

M65-69

11961

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20460

Males

12025

M65-69

12025

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

20968

Males

12276

M65-69

12276

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

23714

Males

13619

M65-69

13619

Passing Analysis

Category:
Athletes Passed
2372
Passed By
761
Net Change
+1611
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22838
5K → 10K301182+119#22838#22719
10K → 15K230124+106#22719#22613
15K → 20K25976+183#22613#22430
20K → Half6414+50#22430#22380
Half → 25K22257+165#22380#22215
25K → 30K42841+387#22215#21828
30K → 20M17725+152#21828#21676
20M → 21M16013+147#21676#21529
21M → 35K1394+135#21529#21394
35K → 23M20713+194#21394#21200
23M → 24M7135+36#21200#21164
24M → 40K7132+39#21164#21125
40K → 25.2M3018+12#21125#21113
25.2M → Finish13127-114#21113#21227
TOTALS2372761+1611
📊

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