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BOSTON MARATHON 2026

Jeffrey Koski

Bib: 9092β€’M

CO

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 42%
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Top 44%
Age Group (M45-49)
#0 / 2413
Race Day Weather
51Β°/41Β°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
23:03
3.11 mi
Rank: #12099
Start β†’ 5K
23:03 | 7:26/mi
10K
46:13
6.21 mi
Rank: #12288 (-189)
5K β†’ 10K
23:10 | 7:28/mi
15K
1:09:13
9.32 mi
Rank: #12154 (+134)
10K β†’ 15K
23:00 | 7:25/mi
20K
1:32:22
12.43 mi
Rank: #11987 (+167)
15K β†’ 20K
23:09 | 7:28/mi
HALF
1:37:24
13.11 mi
Rank: #11983 (+4)
20K β†’ HALF
5:02 | 7:24/mi
25K
1:55:36
15.53 mi
Rank: #11900 (+83)
HALF β†’ 25K
18:12 | 7:31/mi
30K
2:19:27
18.64 mi
Rank: #11727 (+173)
25K β†’ 30K
23:51 | 7:41/mi
20M
2:29:50
20.00 mi
Rank: #11573 (+154)
30K β†’ 20M
10:23 | 7:39/mi
21M
2:37:55
21.00 mi
Rank: #11469 (+104)
20M β†’ 21M
8:05 | 8:05/mi
35K
2:43:33
21.75 mi
Rank: #11421 (+48)
21M β†’ 35K
5:38 | 7:32/mi
23M
2:53:34
23.00 mi
Rank: #11466 (-45)
35K β†’ 23M
10:01 | 8:01/mi
24M
3:01:39
24.00 mi
Rank: #11586 (-120)
23M β†’ 24M
8:05 | 8:05/mi
40K
3:09:03
24.85 mi
Rank: #11791 (-205)
24M β†’ 40K
7:24 | 8:40/mi
25.2M
3:12:18
25.20 mi
Rank: #11868 (-77)
40K β†’ 25.2M
3:15 | 9:26/mi
FINISH
3:21:08
26.22 mi
Rank: #12208 (-340)
25.2M β†’ FINISH
8:50 | 8:41/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:37:24
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:43:44
Pace7:55 /mi
πŸ“ŠPositive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:39:0723:037:2623:03
7:26
-
10K
6.21 mi11:02:1746:137:2723:10
7:28
+0:02
15K
9.32 mi11:25:171:09:137:2623:00
7:25
-0:03
20K
12.43 mi11:48:261:32:227:2623:09
7:28
+0:03
HALF
13.11 mi11:53:281:37:247:265:02
7:24
-0:04
25K
15.53 mi12:11:401:55:367:2718:12
7:31
+0:07
30K
18.64 mi12:35:312:19:277:2923:51
7:41
+0:10
20M
20.00 mi12:45:542:29:507:3010:23
7:39
-0:02
21M
21.00 mi12:53:592:37:557:328:05
8:05
+0:26
35K
21.75 mi12:59:372:43:337:325:38
7:32
-0:33
23M
23.00 mi13:09:382:53:347:3310:01
8:01
+0:29
24M
24.00 mi13:17:433:01:397:358:05
8:05
+0:04
40K
24.85 mi13:25:073:09:037:377:24
8:40
+0:35
25.2M
25.20 mi13:28:223:12:187:383:15
9:26
+0:46
FINISH
26.22 mi13:37:123:21:087:418:50
8:41
-0:45

Checkpoint Splits Visualizations

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

πŸ“ˆPace 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

7:24 /mi

Average Pace

7:41 /mi

Slowest Pace

9:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

0:00

0% of race

Time at Steady Pace

2:35:28

77% of race

Time at Slower Pace

45:40

23% of race

Average Pace: 7:40 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi10:39:0723:037:2623:03
7:26
#12099
10K
6.21 mi11:02:1746:137:2723:10
7:28
#12288
15K
9.32 mi11:25:171:09:137:2623:00
7:25
#12154
20K
12.43 mi11:48:261:32:227:2623:09
7:28
#11987
HALF
13.11 mi11:53:281:37:247:265:02
7:24
#11983
25K
15.53 mi12:11:401:55:367:2718:12
7:31
#11900
30K
18.64 mi12:35:312:19:277:2923:51
7:41
#11727
20M
20.00 mi12:45:542:29:507:3010:23
7:39
#11573
21M
21.00 mi12:53:592:37:557:328:05
8:05
#11469
35K
21.75 mi12:59:372:43:337:325:38
7:32
#11421
23M
23.00 mi13:09:382:53:347:3310:01
8:01
#11466
24M
24.00 mi13:17:433:01:397:358:05
8:05
#11586
40K
24.85 mi13:25:073:09:037:377:24
8:40
#11791
25.2M
25.20 mi13:28:223:12:187:383:15
9:26
#11868
FINISH
26.22 mi13:37:123:21:087:418:50
8:41
#12208
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi120999079907911955(Top 41%)8911(Top 55%)8911(Top 369%)
10K6.21 mi3.10 mi12288-1899134-559134-5512540(Top 43%)9215(Top 56%)9215(Top 382%)
15K9.32 mi3.11 mi12154+1349055+799055+7911955(Top 41%)8911(Top 55%)8911(Top 369%)
20K12.43 mi3.11 mi11987+1678954+1018954+10111558(Top 40%)8659(Top 53%)8659(Top 359%)
HALF13.11 mi0.68 mi11983+48960-68960-611930(Top 41%)8902(Top 54%)8902(Top 369%)
25K15.53 mi2.42 mi11900+838873+878873+8711451(Top 39%)8542(Top 52%)8542(Top 354%)
30K18.64 mi3.11 mi11727+1738758+1158758+11511041(Top 38%)8226(Top 50%)8226(Top 341%)
20M20.00 mi1.36 mi11573+1548673+858673+8510169(Top 35%)7666(Top 47%)7666(Top 318%)
21M21.00 mi1.00 mi11469+1048615+588615+5810448(Top 36%)7714(Top 47%)7714(Top 320%)
35K21.75 mi0.75 mi11421+488574+418574+4111084(Top 38%)8012(Top 49%)8012(Top 332%)
23M23.00 mi1.25 mi11466-458563+118563+1112453(Top 43%)8565(Top 52%)8565(Top 355%)
24M24.00 mi1.00 mi11586-1208586-238586-2314282(Top 49%)9276(Top 57%)9276(Top 384%)
40K24.85 mi0.85 mi11791-2058646-608646-6016551(Top 57%)10204(Top 62%)10204(Top 423%)
25.2M25.20 mi0.35 mi11868-778670-248670-2416860(Top 58%)10347(Top 63%)10347(Top 429%)
FINISH26.22 mi1.02 mi12208-3408795-1258795-12518971(Top 65%)11352(Top 69%)11352(Top 470%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
Γ—21
+97ft-345ft

Overall

11955

Males

8911

M45-49

8911

5K→10K

3.1 - 6.2 mi

Top 43%
Γ—5
+79ft-138ft

Overall

12540

Males

9215

M45-49

9215

10K→15K

6.2 - 9.3 mi

Top 41%
Γ—3
+67ft-78ft

Overall

11955

Males

8911

M45-49

8911

15K→20K

9.3 - 12.4 mi

Top 40%
Γ—5
+106ft-86ft

Overall

11558

Males

8659

M45-49

8659

20K→HALF

12.4 - 13.1 mi

Top 41%
Γ—2
+19ft-37ft

Overall

11930

Males

8902

M45-49

8902

HALF→25K

13.1 - 15.5 mi

Top 39%
Γ—4
+66ft-88ft

Overall

11451

Males

8542

M45-49

8542

25K→30K

15.5 - 18.6 mi

Top 38%
Γ—9
+181ft-148ft

Overall

11041

Males

8226

M45-49

8226

30K→20M

18.6 - 20.0 mi

Top 35%
Γ—5
+64ft-50ft

Overall

10169

Males

7666

M45-49

7666

20M→21M

20.0 - 21.0 mi

Top 36%
Γ—8
+106ft-24ft

Overall

10448

Males

7714

M45-49

7714

21M→35K

21.0 - 21.8 mi

Top 38%
Γ—7
+17ft-86ft

Overall

11084

Males

8012

M45-49

8012

35K→23M

21.8 - 23.0 mi

Top 43%
Γ—5
+23ft-63ft

Overall

12453

Males

8565

M45-49

8565

23M→24M

23.0 - 24.0 mi

Top 49%
Γ—6
+12ft-82ft

Overall

14282

Males

9276

M45-49

9276

24M→40K

24.0 - 24.9 mi

Top 57%
Γ—1
+6ft-20ft

Overall

16551

Males

10204

M45-49

10204

40K→25.2M

24.9 - 25.2 mi

Top 58%
Γ—1
+13ft-16ft

Overall

16860

Males

10347

M45-49

10347

25.2M→FINISH

25.2 - 26.2 mi

Top 65%
Γ—2
+22ft-21ft

Overall

18971

Males

11352

M45-49

11352

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1741
Passed By
1850
Net Change
-109
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#12099
5K β†’ 10K186375-189#12099#12288
10K β†’ 15K251117+134#12288#12154
15K β†’ 20K24679+167#12154#11987
20K β†’ HALF2723+4#11987#11983
HALF β†’ 25K16279+83#11983#11900
25K β†’ 30K25986+173#11900#11727
30K β†’ 20M17824+154#11727#11573
20M β†’ 21M13733+104#11573#11469
21M β†’ 35K8638+48#11469#11421
35K β†’ 23M80125-45#11421#11466
23M β†’ 24M53173-120#11466#11586
24M β†’ 40K40245-205#11586#11791
40K β†’ 25.2M1592-77#11791#11868
25.2M β†’ FINISH21361-340#11868#12208
TOTALS17411850-109
πŸ“Š

Passing Analysis Visualizations

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

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing