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BOSTON MARATHON 2025

Jonah Jaffe

MA

Bib: 2761 M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 8%
Division (M18-39)
#0 / 5642
Top 18%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:04/mi
18:50
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:03/mi
37:39
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:05/mi
56:32
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:02/mi
1:15:16
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
5:58/mi
1:19:20
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
5:59/mi
1:33:51
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
6:09/mi
1:52:56
↑ 181↓ 1480.2%
138 ft elev
20M
6:16/mi
2:01:27
↑ 64↓ 500.2%
148 ft elev
21M
6:44/mi
2:08:11
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
6:06/mi
2:12:45
↑ 17↓ 861.7%
156 ft elev
23M
6:26/mi
2:20:48
↑ 23↓ 630.6%
116 ft elev
24M
6:30/mi
2:27:18
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:13/mi
2:33:28
↓ 200.3%
20 ft elev
25.2M
9:02/mi
2:36:35
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:38/mi
2:44:22
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:19:206:03 /mi⚡ faster
2nd Half
1:25:026:29 /mi+7.2%
Positive split — 7.2% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:2118:506:0418:50
6:04
-
10K
6.21 mi10:39:1037:396:0418:49
6:03
-0:01
15K
9.32 mi10:58:0356:326:0418:53
6:05
+0:02
20K
12.43 mi11:16:471:15:166:0318:44
6:02
-0:03
Half
13.11 mi11:20:511:19:206:034:04
5:58
-0:04
25K
15.53 mi11:35:221:33:516:0214:31
5:59
+0:01
30K
18.64 mi11:54:271:52:566:0319:05
6:09
+0:10
20M
20.00 mi12:02:582:01:276:048:31
6:16
+0:07
21M
21.00 mi12:09:422:08:116:066:44
6:44
+0:28
35K
21.75 mi12:14:162:12:456:064:34
6:06
-0:38
23M
23.00 mi12:22:192:20:486:078:03
6:26
+0:20
24M
24.00 mi12:28:492:27:186:086:30
6:30
+0:04
40K
24.85 mi12:34:592:33:286:106:10
7:13
+0:43
25.2M
25.20 mi12:38:062:36:356:133:07
9:02
+1:49
Finish
26.22 mi12:45:532:44:226:167:47
7:38
-1:24

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

5:58 /mi

Average Pace

6:16 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:20:34

86% of race

Time at Slower Pace

23:48

14% of race

Average Pace: 6:16 /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 mi10:20:2118:506:0418:50
6:04
#1274
10K
6.21 mi10:39:1037:396:0418:49
6:03
#1257
15K
9.32 mi10:58:0356:326:0418:53
6:05
#1251
20K
12.43 mi11:16:471:15:166:0318:44
6:02
#1158
Half
13.11 mi11:20:511:19:206:034:04
5:58
#1142
25K
15.53 mi11:35:221:33:516:0214:31
5:59
#1074
30K
18.64 mi11:54:271:52:566:0319:05
6:09
#988
20M
20.00 mi12:02:582:01:276:048:31
6:16
#954
21M
21.00 mi12:09:422:08:116:066:44
6:44
#958
35K
21.75 mi12:14:162:12:456:064:34
6:06
#938
23M
23.00 mi12:22:192:20:486:078:03
6:26
#932
24M
24.00 mi12:28:492:27:186:086:30
6:30
#960
40K
24.85 mi12:34:592:33:286:106:10
7:13
#1034
25.2M
25.20 mi12:38:062:36:356:133:07
9:02
#1120
Finish
26.22 mi12:45:532:44:226:167:47
7:38
#1304
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi127412091209129512301230
10K6.21 mi3.10 mi1257+171194+151194+15131012431243
15K9.32 mi3.11 mi1251+61188+61188+6129512301230
20K12.43 mi3.11 mi1158+931098+901098+90955900900
Half13.11 mi0.68 mi1142+161081+171081+171033980980
25K15.53 mi2.42 mi1074+681013+681013+68769721721
30K18.64 mi3.11 mi988+86931+82931+82775727727
20M20.00 mi1.36 mi954+34896+35896+35885836836
21M21.00 mi1.00 mi958-4903-7903-7129612251225
35K21.75 mi0.75 mi938+20882+21882+21971914914
23M23.00 mi1.25 mi932+6876+6876+6123211611161
24M24.00 mi1.00 mi960-28903-27903-27202518781878
40K24.85 mi0.85 mi1034-74973-70973-70507442454245
25.2M25.20 mi0.35 mi1120-861055-821055-821188478957895
Finish26.22 mi1.02 mi1304-1841226-1711226-1711016770537053

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21story building
+97ft-345ft

Overall

1295

Males

1230

M18-39

1230

5K→10K

3.1 - 6.2 mi

Top 5%
×5story building
+79ft-138ft

Overall

1310

Males

1243

M18-39

1243

10K→15K

6.2 - 9.3 mi

Top 5%
×3story building
+67ft-78ft

Overall

1295

Males

1230

M18-39

1230

15K→20K

9.3 - 12.4 mi

Top 3%
×5story building
+106ft-86ft

Overall

955

Males

900

M18-39

900

20K→Half

12.4 - 13.1 mi

Top 4%
×2story building
+19ft-37ft

Overall

1033

Males

980

M18-39

980

Half→25K

13.1 - 15.5 mi

Top 3%
×4story building
+66ft-88ft

Overall

769

Males

721

M18-39

721

25K→30K

15.5 - 18.6 mi

Top 3%
×9story building
+181ft-148ft

Overall

775

Males

727

M18-39

727

30K→20M

18.6 - 20.0 mi

Top 3%
×5story building
+64ft-50ft

Overall

885

Males

836

M18-39

836

20M→21M

20.0 - 21.0 mi

Top 5%
×8story building
+106ft-24ft

Overall

1296

Males

1225

M18-39

1225

21M→35K

21.0 - 21.8 mi

Top 3%
×7story building
+17ft-86ft

Overall

971

Males

914

M18-39

914

35K→23M

21.8 - 23.0 mi

Top 4%
×5story building
+23ft-63ft

Overall

1232

Males

1161

M18-39

1161

23M→24M

23.0 - 24.0 mi

Top 7%
×6story building
+12ft-82ft

Overall

2025

Males

1878

M18-39

1878

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5074

Males

4245

M18-39

4245

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11884

Males

7895

M18-39

7895

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

10167

Males

7053

M18-39

7053

Passing Analysis

Category:
Athletes Passed
528
Passed By
558
Net Change
-30
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1274
5K → 10K7154+17#1274#1257
10K → 15K4135+6#1257#1251
15K → 20K1029+93#1251#1158
20K → Half193+16#1158#1142
Half → 25K680+68#1142#1074
25K → 30K9913+86#1074#988
30K → 20M4612+34#988#954
20M → 21M1923-4#954#958
21M → 35K299+20#958#938
35K → 23M2115+6#938#932
23M → 24M735-28#932#960
24M → 40K478-74#960#1034
40K → 25.2M187-86#1034#1120
25.2M → Finish1185-184#1120#1304
TOTALS528558-30

Passing Charts

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