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BOSTON MARATHON 2025

David Jackson

Bib: 2638•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Masters (Masters Men)
#0 / 10463
Top 3%
Division (M40-44)
#0 / 2247
Top 10%
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
6:20/mi
19:42
↑ 97↓ 3451.5%
10K· 6.21 mi
6:25/mi
39:38
↑ 79↓ 1380.4%
15K· 9.32 mi
6:22/mi
59:24
↑ 67↓ 78
20K· 12.43 mi
6:26/mi
1:19:22
↑ 106↓ 860.1%
Half· 13.11 mi
6:23/mi
1:23:43
↑ 19↓ 370.5%
25K· 15.53 mi
6:25/mi
1:39:16
↑ 66↓ 880.2%
30K· 18.64 mi
6:29/mi
1:59:25
↑ 181↓ 1480.2%
20M
6:34/mi
2:08:20
↑ 64↓ 500.2%
21M
6:48/mi
2:15:08
↑ 106↓ 241.6%
35K· 21.75 mi
6:25/mi
2:19:56
↑ 17↓ 861.7%
23M
6:36/mi
2:28:12
↑ 23↓ 630.6%
24M
6:25/mi
2:34:37
↓ 821.3%
40K· 24.85 mi
6:28/mi
2:40:09
↓ 200.3%
25.2M
7:03/mi
2:42:35
↑ 13↓ 160.2%
Finish· 26.22 mi
6:19/mi
2:49:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:43
Pace6:23 /mi
2nd Half
Distance13.11 mi
Time1:25:18
Pace6:30 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:5719:426:2019:42
6:20
-
10K
6.21 mi10:40:5339:386:2319:56
6:25
+0:05
15K
9.32 mi11:00:3959:246:2219:46
6:22
-0:03
20K
12.43 mi11:20:371:19:226:2319:58
6:26
+0:04
Half
13.11 mi11:24:581:23:436:234:21
6:23
-0:03
25K
15.53 mi11:40:311:39:166:2315:33
6:25
+0:02
30K
18.64 mi12:00:401:59:256:2420:09
6:29
+0:04
20M
20.00 mi12:09:352:08:206:258:55
6:34
+0:05
21M
21.00 mi12:16:232:15:086:266:48
6:48
+0:14
35K
21.75 mi12:21:112:19:566:264:48
6:25
-0:23
23M
23.00 mi12:29:272:28:126:278:16
6:36
+0:11
24M
24.00 mi12:35:522:34:376:276:25
6:25
-0:11
40K
24.85 mi12:41:242:40:096:275:32
6:28
+0:03
25.2M
25.20 mi12:43:502:42:356:272:26
7:03
+0:35
Finish
26.22 mi12:50:162:49:016:276:26
6:19
-0:44

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

6:19 /mi

Average Pace

6:27 /mi

Slowest Pace

7:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:35

99% of race

Time at Steady Pace

2:26

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:27 /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 mi10:20:5719:426:2019:42
6:20
#2684
10K
6.21 mi10:40:5339:386:2319:56
6:25
#2893
15K
9.32 mi11:00:3959:246:2219:46
6:22
#2826
20K
12.43 mi11:20:371:19:226:2319:58
6:26
#2774
Half
13.11 mi11:24:581:23:436:234:21
6:23
#2775
25K
15.53 mi11:40:311:39:166:2315:33
6:25
#2679
30K
18.64 mi12:00:401:59:256:2420:09
6:29
#2480
20M
20.00 mi12:09:352:08:206:258:55
6:34
#2402
21M
21.00 mi12:16:232:15:086:266:48
6:48
#2313
35K
21.75 mi12:21:112:19:566:264:48
6:25
#2294
23M
23.00 mi12:29:272:28:126:278:16
6:36
#2228
24M
24.00 mi12:35:522:34:376:276:25
6:25
#2169
40K
24.85 mi12:41:242:40:096:275:32
6:28
#2113
25.2M
25.20 mi12:43:502:42:356:272:26
7:03
#2095
Finish
26.22 mi12:50:162:49:016:276:26
6:19
#2085
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2684255825582692(Top 9%)2563(Top 16%)2563(Top 114%)
10K6.21 mi3.10 mi2893-2092756-1982756-1983126(Top 11%)2974(Top 18%)2974(Top 132%)
15K9.32 mi3.11 mi2826+672694+622694+622692(Top 9%)2563(Top 16%)2563(Top 114%)
20K12.43 mi3.11 mi2774+522645+492645+492654(Top 9%)2524(Top 16%)2524(Top 112%)
Half13.11 mi0.68 mi2775-12646-12646-12871(Top 10%)2738(Top 17%)2738(Top 122%)
25K15.53 mi2.42 mi2679+962556+902556+902427(Top 9%)2307(Top 14%)2307(Top 103%)
30K18.64 mi3.11 mi2480+1992367+1892367+1891910(Top 7%)1819(Top 11%)1819(Top 81%)
20M20.00 mi1.36 mi2402+782291+762291+761853(Top 7%)1753(Top 11%)1753(Top 78%)
21M21.00 mi1.00 mi2313+892205+862205+861530(Top 5%)1441(Top 9%)1441(Top 64%)
35K21.75 mi0.75 mi2294+192186+192186+192065(Top 7%)1932(Top 12%)1932(Top 86%)
23M23.00 mi1.25 mi2228+662121+652121+651829(Top 6%)1710(Top 11%)1710(Top 76%)
24M24.00 mi1.00 mi2169+592062+592062+591709(Top 6%)1594(Top 10%)1594(Top 71%)
40K24.85 mi0.85 mi2113+562007+552007+551509(Top 5%)1396(Top 9%)1396(Top 62%)
25.2M25.20 mi0.35 mi2095+181988+191988+191634(Top 6%)1491(Top 9%)1491(Top 66%)
Finish26.22 mi1.02 mi2085+101978+101978+101934(Top 7%)1778(Top 11%)1778(Top 79%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21story building
+97ft-345ft

Overall

2692

Males

2563

M40-44

2563

5K→10K

3.1 - 6.2 mi

Top 11%
×5story building
+79ft-138ft

Overall

3126

Males

2974

M40-44

2974

10K→15K

6.2 - 9.3 mi

Top 9%
×3story building
+67ft-78ft

Overall

2692

Males

2563

M40-44

2563

15K→20K

9.3 - 12.4 mi

Top 9%
×5story building
+106ft-86ft

Overall

2654

Males

2524

M40-44

2524

20K→Half

12.4 - 13.1 mi

Top 10%
×2story building
+19ft-37ft

Overall

2871

Males

2738

M40-44

2738

Half→25K

13.1 - 15.5 mi

Top 9%
×4story building
+66ft-88ft

Overall

2427

Males

2307

M40-44

2307

25K→30K

15.5 - 18.6 mi

Top 7%
×9story building
+181ft-148ft

Overall

1910

Males

1819

M40-44

1819

30K→20M

18.6 - 20.0 mi

Top 7%
×5story building
+64ft-50ft

Overall

1853

Males

1753

M40-44

1753

20M→21M

20.0 - 21.0 mi

Top 5%
×8story building
+106ft-24ft

Overall

1530

Males

1441

M40-44

1441

21M→35K

21.0 - 21.8 mi

Top 7%
×7story building
+17ft-86ft

Overall

2065

Males

1932

M40-44

1932

35K→23M

21.8 - 23.0 mi

Top 6%
×5story building
+23ft-63ft

Overall

1829

Males

1710

M40-44

1710

23M→24M

23.0 - 24.0 mi

Top 6%
×6story building
+12ft-82ft

Overall

1709

Males

1594

M40-44

1594

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1509

Males

1396

M40-44

1396

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1634

Males

1491

M40-44

1491

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2story building
+22ft-21ft

Overall

1934

Males

1778

M40-44

1778

Passing Analysis

Category:
Athletes Passed
1094
Passed By
495
Net Change
+599
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2684
5K → 10K63272-209#2684#2893
10K → 15K11447+67#2893#2826
15K → 20K10553+52#2826#2774
20K → Half1112-1#2774#2775
Half → 25K11721+96#2775#2679
25K → 30K21011+199#2679#2480
30K → 20M879+78#2480#2402
20M → 21M912+89#2402#2313
21M → 35K3112+19#2313#2294
35K → 23M7610+66#2294#2228
23M → 24M667+59#2228#2169
24M → 40K6610+56#2169#2113
40K → 25.2M257+18#2113#2095
25.2M → Finish3222+10#2095#2085
TOTALS1094495+599
📊

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