All Results|Race Analytics|Course|Contact
BOSTON MARATHON 2026

Joel Koffman

Bib: 25770•M

ON

Boston Marathon logo
0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M75-79)
#0 / 68
Top 18%
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
27:22
3.11 mi
Rank: #21730
Start → 5K
27:22 | 8:49/mi
10K
55:58
6.21 mi
Rank: #22780 (-1050)
5K → 10K
28:36 | 9:13/mi
15K
1:24:38
9.32 mi
Rank: #23042 (-262)
10K → 15K
28:40 | 9:14/mi
20K
1:54:10
12.43 mi
Rank: #23301 (-259)
15K → 20K
29:32 | 9:31/mi
HALF
2:00:34
13.11 mi
Rank: #23350 (-49)
20K → HALF
6:24 | 9:24/mi
25K
2:24:13
15.53 mi
Rank: #23415 (-65)
HALF → 25K
23:39 | 9:46/mi
30K
2:55:49
18.64 mi
Rank: #23433 (-18)
25K → 30K
31:36 | 10:11/mi
20M
3:09:50
20.00 mi
Rank: #23397 (+36)
30K → 20M
14:01 | 10:20/mi
21M
3:20:45
21.00 mi
Rank: #23353 (+44)
20M → 21M
10:55 | 10:55/mi
35K
3:28:12
21.75 mi
Rank: #23324 (+29)
21M → 35K
7:27 | 9:58/mi
23M
3:41:02
23.00 mi
Rank: #23283 (+41)
35K → 23M
12:50 | 10:16/mi
24M
3:50:57
24.00 mi
Rank: #23231 (+52)
23M → 24M
9:55 | 9:55/mi
40K
3:59:40
24.85 mi
Rank: #23189 (+42)
24M → 40K
8:43 | 10:12/mi
25.2M
4:03:28
25.20 mi
Rank: #23167 (+22)
40K → 25.2M
3:48 | 11:02/mi
FINISH
4:13:40
26.22 mi
Rank: #23190 (-23)
25.2M → FINISH
10:12 | 10:01/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:00:34
Pace9:12 /mi
2nd Half
Distance13.11 mi
Time2:13:06
Pace10:10 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:34:4327:228:4927:22
8:49
-
10K
6.21 mi12:03:1955:589:0128:36
9:13
+0:24
15K
9.32 mi12:31:591:24:389:0528:40
9:14
+0:01
20K
12.43 mi13:01:311:54:109:1229:32
9:31
+0:17
HALF
13.11 mi13:07:552:00:349:126:24
9:24
-0:07
25K
15.53 mi13:31:342:24:139:1823:39
9:46
+0:22
30K
18.64 mi14:03:102:55:499:2631:36
10:11
+0:25
20M
20.00 mi14:17:113:09:509:3014:01
10:20
+0:09
21M
21.00 mi14:28:063:20:459:3410:55
10:55
+0:35
35K
21.75 mi14:35:333:28:129:357:27
9:58
-0:57
23M
23.00 mi14:48:233:41:029:3712:50
10:16
+0:18
24M
24.00 mi14:58:183:50:579:389:55
9:55
-0:21
40K
24.85 mi15:07:013:59:409:398:43
10:12
+0:17
25.2M
25.20 mi15:10:494:03:289:403:48
11:02
+0:50
FINISH
26.22 mi15:21:014:13:409:4110:12
10:01
-1:01

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:49 /mi

Average Pace

9:41 /mi

Slowest Pace

11:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:00:34

48% of race

Time at Steady Pace

1:31:32

36% of race

Time at Slower Pace

41:34

16% of race

Average Pace: 9:40 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:34:4327:228:4927:22
8:49
#21730
10K
6.21 mi12:03:1955:589:0128:36
9:13
#22780
15K
9.32 mi12:31:591:24:389:0528:40
9:14
#23042
20K
12.43 mi13:01:311:54:109:1229:32
9:31
#23301
HALF
13.11 mi13:07:552:00:349:126:24
9:24
#23350
25K
15.53 mi13:31:342:24:139:1823:39
9:46
#23415
30K
18.64 mi14:03:102:55:499:2631:36
10:11
#23433
20M
20.00 mi14:17:113:09:509:3014:01
10:20
#23397
21M
21.00 mi14:28:063:20:459:3410:55
10:55
#23353
35K
21.75 mi14:35:333:28:129:357:27
9:58
#23324
23M
23.00 mi14:48:233:41:029:3712:50
10:16
#23283
24M
24.00 mi14:58:183:50:579:389:55
9:55
#23231
40K
24.85 mi15:07:013:59:409:398:43
10:12
#23189
25.2M
25.20 mi15:10:494:03:289:403:48
11:02
#23167
FINISH
26.22 mi15:21:014:13:409:4110:12
10:01
#23190
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM75-79Seg. OverallSeg. MalesSeg. M75-79
5K3.11 mi3.11 mi21730130931309323587(Top 81%)14042(Top 86%)14042(Top 20650%)
10K6.21 mi3.10 mi22780-105013639-54613639-54623641(Top 81%)14067(Top 86%)14067(Top 20687%)
15K9.32 mi3.11 mi23042-26213783-14413783-14423587(Top 81%)14042(Top 86%)14042(Top 20650%)
20K12.43 mi3.11 mi23301-25913890-10713890-10723770(Top 82%)14098(Top 86%)14098(Top 20732%)
HALF13.11 mi0.68 mi23350-4913917-2713917-2724038(Top 83%)14228(Top 87%)14228(Top 20924%)
25K15.53 mi2.42 mi23415-6513938-2113938-2123688(Top 82%)14032(Top 86%)14032(Top 20635%)
30K18.64 mi3.11 mi23433-1813903+3513903+3523546(Top 81%)13862(Top 85%)13862(Top 20385%)
20M20.00 mi1.36 mi23397+3613871+3213871+3223383(Top 81%)13713(Top 84%)13713(Top 20166%)
21M21.00 mi1.00 mi23353+4413838+3313838+3322912(Top 79%)13457(Top 82%)13457(Top 19790%)
35K21.75 mi0.75 mi23324+2913821+1713821+1723033(Top 79%)13480(Top 82%)13480(Top 19824%)
23M23.00 mi1.25 mi23283+4113788+3313788+3322794(Top 79%)13297(Top 81%)13297(Top 19554%)
24M24.00 mi1.00 mi23231+5213754+3413754+3422568(Top 78%)13163(Top 81%)13163(Top 19357%)
40K24.85 mi0.85 mi23189+4213720+3413720+3422431(Top 77%)13027(Top 80%)13027(Top 19157%)
25.2M25.20 mi0.35 mi23167+2213704+1613704+1622401(Top 77%)13032(Top 80%)13032(Top 19165%)
FINISH26.22 mi1.02 mi23190-2313708-413708-423863(Top 82%)13727(Top 84%)13727(Top 20187%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21
+97ft-345ft

Overall

23587

Males

14042

M75-79

14042

5K→10K

3.1 - 6.2 mi

Top 81%
×5
+79ft-138ft

Overall

23641

Males

14067

M75-79

14067

10K→15K

6.2 - 9.3 mi

Top 81%
×3
+67ft-78ft

Overall

23587

Males

14042

M75-79

14042

15K→20K

9.3 - 12.4 mi

Top 82%
×5
+106ft-86ft

Overall

23770

Males

14098

M75-79

14098

20K→HALF

12.4 - 13.1 mi

Top 83%
×2
+19ft-37ft

Overall

24038

Males

14228

M75-79

14228

HALF→25K

13.1 - 15.5 mi

Top 82%
×4
+66ft-88ft

Overall

23688

Males

14032

M75-79

14032

25K→30K

15.5 - 18.6 mi

Top 81%
×9
+181ft-148ft

Overall

23546

Males

13862

M75-79

13862

30K→20M

18.6 - 20.0 mi

Top 81%
×5
+64ft-50ft

Overall

23383

Males

13713

M75-79

13713

20M→21M

20.0 - 21.0 mi

Top 79%
×8
+106ft-24ft

Overall

22912

Males

13457

M75-79

13457

21M→35K

21.0 - 21.8 mi

Top 79%
×7
+17ft-86ft

Overall

23033

Males

13480

M75-79

13480

35K→23M

21.8 - 23.0 mi

Top 79%
×5
+23ft-63ft

Overall

22794

Males

13297

M75-79

13297

23M→24M

23.0 - 24.0 mi

Top 78%
×6
+12ft-82ft

Overall

22568

Males

13163

M75-79

13163

24M→40K

24.0 - 24.9 mi

Top 77%
×1
+6ft-20ft

Overall

22431

Males

13027

M75-79

13027

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1
+13ft-16ft

Overall

22401

Males

13032

M75-79

13032

25.2M→FINISH

25.2 - 26.2 mi

Top 82%
×2
+22ft-21ft

Overall

23863

Males

13727

M75-79

13727

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
982
Passed By
1262
Net Change
-1460
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21730
5K → 10K40200-1050#21730#22780
10K → 15K92200-262#22780#23042
15K → 20K77200-259#23042#23301
20K → HALF1665-49#23301#23350
HALF → 25K104169-65#23350#23415
25K → 30K137155-18#23415#23433
30K → 20M8852+36#23433#23397
20M → 21M8743+44#23397#23353
21M → 35K5930+29#23353#23324
35K → 23M7635+41#23324#23283
23M → 24M7624+52#23283#23231
24M → 40K6927+42#23231#23189
40K → 25.2M3412+22#23189#23167
25.2M → FINISH2750-23#23167#23190
TOTALS9821262-1460
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing