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BOSTON MARATHON 2025

Dennis Jackson

Bib: 24279•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

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
8:40/mi
26:57
↑ 97↓ 3451.5%
10K· 6.21 mi
8:50/mi
54:23
↑ 79↓ 1380.4%
15K· 9.32 mi
8:56/mi
1:22:09
↑ 67↓ 78
20K· 12.43 mi
9:13/mi
1:50:48
↑ 106↓ 860.1%
Half· 13.11 mi
9:02/mi
1:56:58
↑ 19↓ 370.5%
25K· 15.53 mi
11:01/mi
2:23:40
↑ 66↓ 880.2%
30K· 18.64 mi
11:44/mi
3:00:08
↑ 181↓ 1480.2%
20M
11:02/mi
3:15:07
↑ 64↓ 500.2%
21M
13:36/mi
3:28:43
↑ 106↓ 241.6%
35K· 21.75 mi
12:00/mi
3:37:42
↑ 17↓ 861.7%
23M
13:27/mi
3:54:33
↑ 23↓ 630.6%
24M
12:05/mi
4:06:38
↓ 821.3%
40K· 24.85 mi
10:14/mi
4:15:23
↓ 200.3%
25.2M
17:15/mi
4:21:20
↑ 13↓ 160.2%
Finish· 26.22 mi
11:57/mi
4:33:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:58
Pace8:55 /mi
2nd Half
Distance13.11 mi
Time2:36:33
Pace11:57 /mi
📊Positive Split: 33.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:3426:578:4026:57
8:40
-
10K
6.21 mi11:53:0054:238:4527:26
8:50
+0:10
15K
9.32 mi12:20:461:22:098:4927:46
8:56
+0:06
20K
12.43 mi12:49:251:50:488:5528:39
9:13
+0:17
Half
13.11 mi12:55:351:56:588:556:10
9:02
-0:11
25K
15.53 mi13:22:172:23:409:1526:42
11:01
+1:59
30K
18.64 mi13:58:453:00:089:4036:28
11:44
+0:43
20M
20.00 mi14:13:443:15:079:4514:59
11:02
-0:42
21M
21.00 mi14:27:203:28:439:5613:36
13:36
+2:34
35K
21.75 mi14:36:193:37:4210:018:59
12:00
-1:36
23M
23.00 mi14:53:103:54:3310:1216:51
13:27
+1:27
24M
24.00 mi15:05:154:06:3810:1712:05
12:05
-1:22
40K
24.85 mi15:14:004:15:2310:168:45
10:14
-1:51
25.2M
25.20 mi15:19:574:21:2010:225:57
17:15
+7:01
Finish
26.22 mi15:32:084:33:3110:2612:11
11:57
-5:18

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

8:40 /mi

Average Pace

10:26 /mi

Slowest Pace

17:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:58

43% of race

Time at Steady Pace

2:00:09

44% of race

Time at Slower Pace

36:24

13% of race

Average Pace: 10:26 /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 mi11:25:3426:578:4026:57
8:40
#20891
10K
6.21 mi11:53:0054:238:4527:26
8:50
#21178
15K
9.32 mi12:20:461:22:098:4927:46
8:56
#21343
20K
12.43 mi12:49:251:50:488:5528:39
9:13
#21534
Half
13.11 mi12:55:351:56:588:556:10
9:02
#21562
25K
15.53 mi13:22:172:23:409:1526:42
11:01
#22604
30K
18.64 mi13:58:453:00:089:4036:28
11:44
#23282
20M
20.00 mi14:13:443:15:079:4514:59
11:02
#23299
21M
21.00 mi14:27:203:28:439:5613:36
13:36
#23551
35K
21.75 mi14:36:193:37:4210:018:59
12:00
#23695
23M
23.00 mi14:53:103:54:3310:1216:51
13:27
#23993
24M
24.00 mi15:05:154:06:3810:1712:05
12:05
#24112
40K
24.85 mi15:14:004:15:2310:168:45
10:14
#24016
25.2M
25.20 mi15:19:574:21:2010:225:57
17:15
#24186
Finish
26.22 mi15:32:084:33:3110:2612:11
11:57
#24326
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi20891128151281521735(Top 77%)13282(Top 82%)13282(Top 2079%)
10K6.21 mi3.10 mi21178-28712969-15412969-15421544(Top 76%)13152(Top 82%)13152(Top 2058%)
15K9.32 mi3.11 mi21343-16513068-9913068-9921735(Top 77%)13282(Top 82%)13282(Top 2079%)
20K12.43 mi3.11 mi21534-19113142-7413142-7421969(Top 77%)13349(Top 83%)13349(Top 2089%)
Half13.11 mi0.68 mi21562-2813148-613148-621977(Top 77%)13336(Top 83%)13336(Top 2087%)
25K15.53 mi2.42 mi22604-104213618-47013618-47025223(Top 89%)14735(Top 91%)14735(Top 2306%)
30K18.64 mi3.11 mi23282-67813883-26513883-26525199(Top 89%)14624(Top 91%)14624(Top 2289%)
20M20.00 mi1.36 mi23299-1713878+513878+523640(Top 83%)13820(Top 86%)13820(Top 2163%)
21M21.00 mi1.00 mi23551-25213964-8613964-8625767(Top 91%)14770(Top 92%)14770(Top 2311%)
35K21.75 mi0.75 mi23695-14414023-5914023-5925864(Top 91%)14762(Top 92%)14762(Top 2310%)
23M23.00 mi1.25 mi23993-29814138-11514138-11526849(Top 95%)15258(Top 95%)15258(Top 2388%)
24M24.00 mi1.00 mi24112-11914174-3614174-3625772(Top 91%)14691(Top 91%)14691(Top 2299%)
40K24.85 mi0.85 mi24016+9614119+5514119+5521178(Top 75%)12376(Top 77%)12376(Top 1937%)
25.2M25.20 mi0.35 mi24186-17014195-7614195-7628107(Top 99%)15889(Top 99%)15889(Top 2487%)
Finish26.22 mi1.02 mi24326-14014259-6414259-6426738(Top 94%)15173(Top 94%)15173(Top 2374%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21story building
+97ft-345ft

Overall

21735

Males

13282

M65-69

13282

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

21544

Males

13152

M65-69

13152

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+67ft-78ft

Overall

21735

Males

13282

M65-69

13282

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

21969

Males

13349

M65-69

13349

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

21977

Males

13336

M65-69

13336

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

25223

Males

14735

M65-69

14735

25K→30K

15.5 - 18.6 mi

Top 89%
×9story building
+181ft-148ft

Overall

25199

Males

14624

M65-69

14624

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

23640

Males

13820

M65-69

13820

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

25767

Males

14770

M65-69

14770

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

25864

Males

14762

M65-69

14762

35K→23M

21.8 - 23.0 mi

Top 95%
×5story building
+23ft-63ft

Overall

26849

Males

15258

M65-69

15258

23M→24M

23.0 - 24.0 mi

Top 91%
×6story building
+12ft-82ft

Overall

25772

Males

14691

M65-69

14691

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

21178

Males

12376

M65-69

12376

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

28107

Males

15889

M65-69

15889

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

26738

Males

15173

M65-69

15173

Passing Analysis

Category:
Athletes Passed
777
Passed By
4212
Net Change
-3435
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20891
5K → 10K158445-287#20891#21178
10K → 15K156321-165#21178#21343
15K → 20K132323-191#21343#21534
20K → Half3159-28#21534#21562
Half → 25K111053-1042#21562#22604
25K → 30K36714-678#22604#23282
30K → 20M7289-17#23282#23299
20M → 21M20272-252#23299#23551
21M → 35K15159-144#23551#23695
35K → 23M18316-298#23695#23993
23M → 24M19138-119#23993#24112
24M → 40K1004+96#24112#24016
40K → 25.2M1171-170#24016#24186
25.2M → Finish8148-140#24186#24326
TOTALS7774212-3435
📊

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