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BOSTON MARATHON 2026

Adam Shaffer

Bib: 8507β€’M

CA

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 16%
Gender (Male)
#0 / 16340
Top 26%
Masters (Masters Men)
#0 / 10617
Top 12%
Age Group (M45-49)
#0 / 2413
Top 14%
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
19:57
3.11 mi
Rank: #3631
Start β†’ 5K
19:57 | 6:26/mi
10K
39:39
6.21 mi
Rank: #3348 (+283)
5K β†’ 10K
19:42 | 6:21/mi
15K
59:31
9.32 mi
Rank: #3389 (-41)
10K β†’ 15K
19:52 | 6:24/mi
20K
1:19:49
12.43 mi
Rank: #3514 (-125)
15K β†’ 20K
20:18 | 6:33/mi
HALF
1:24:11
13.11 mi
Rank: #3514
20K β†’ HALF
4:22 | 6:25/mi
25K
1:40:24
15.53 mi
Rank: #3687 (-173)
HALF β†’ 25K
16:13 | 6:42/mi
30K
2:01:36
18.64 mi
Rank: #3775 (-88)
25K β†’ 30K
21:12 | 6:50/mi
20M
2:10:50
20.00 mi
Rank: #3749 (+26)
30K β†’ 20M
9:14 | 6:48/mi
21M
2:18:28
21.00 mi
Rank: #3908 (-159)
20M β†’ 21M
7:38 | 7:38/mi
35K
2:23:31
21.75 mi
Rank: #3932 (-24)
21M β†’ 35K
5:03 | 6:46/mi
23M
2:32:28
23.00 mi
Rank: #4026 (-94)
35K β†’ 23M
8:57 | 7:10/mi
24M
2:39:36
24.00 mi
Rank: #4148 (-122)
23M β†’ 24M
7:08 | 7:08/mi
40K
2:45:59
24.85 mi
Rank: #4291 (-143)
24M β†’ 40K
6:23 | 7:28/mi
25.2M
2:48:49
25.20 mi
Rank: #4374 (-83)
40K β†’ 25.2M
2:50 | 8:13/mi
FINISH
2:56:30
26.22 mi
Rank: #4623 (-249)
25.2M β†’ FINISH
7:41 | 7:33/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:24:11
Pace6:26 /mi
2nd Half
Distance13.11 mi
Time1:32:19
Pace7:03 /mi
πŸ“ŠPositive Split: 9.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:2619:576:2619:57
6:26
-
10K
6.21 mi11:08:0839:396:2319:42
6:21
-0:05
15K
9.32 mi11:28:0059:316:2419:52
6:24
+0:03
20K
12.43 mi11:48:181:19:496:2620:18
6:33
+0:09
HALF
13.11 mi11:52:401:24:116:264:22
6:25
-0:08
25K
15.53 mi12:08:531:40:246:2816:13
6:42
+0:17
30K
18.64 mi12:30:052:01:366:3221:12
6:50
+0:08
20M
20.00 mi12:39:192:10:506:339:14
6:48
-0:02
21M
21.00 mi12:46:572:18:286:367:38
7:38
+0:50
35K
21.75 mi12:52:002:23:316:365:03
6:46
-0:52
23M
23.00 mi13:00:572:32:286:388:57
7:10
+0:24
24M
24.00 mi13:08:052:39:366:407:08
7:08
-0:02
40K
24.85 mi13:14:282:45:596:416:23
7:28
+0:20
25.2M
25.20 mi13:17:182:48:496:422:50
8:13
+0:45
FINISH
26.22 mi13:24:592:56:306:457:41
7:33
-0:40

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

6:21 /mi

Average Pace

6:44 /mi

Slowest Pace

8:13 /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

1:03:53

36% of race

Time at Steady Pace

1:12:00

41% of race

Time at Slower Pace

40:37

23% of race

Average Pace: 6:44 /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 mi10:48:2619:576:2619:57
6:26
#3631
10K
6.21 mi11:08:0839:396:2319:42
6:21
#3348
15K
9.32 mi11:28:0059:316:2419:52
6:24
#3389
20K
12.43 mi11:48:181:19:496:2620:18
6:33
#3514
HALF
13.11 mi11:52:401:24:116:264:22
6:25
#3514
25K
15.53 mi12:08:531:40:246:2816:13
6:42
#3687
30K
18.64 mi12:30:052:01:366:3221:12
6:50
#3775
20M
20.00 mi12:39:192:10:506:339:14
6:48
#3749
21M
21.00 mi12:46:572:18:286:367:38
7:38
#3908
35K
21.75 mi12:52:002:23:316:365:03
6:46
#3932
23M
23.00 mi13:00:572:32:286:388:57
7:10
#4026
24M
24.00 mi13:08:052:39:366:407:08
7:08
#4148
40K
24.85 mi13:14:282:45:596:416:23
7:28
#4291
25.2M
25.20 mi13:17:182:48:496:422:50
8:13
#4374
FINISH
26.22 mi13:24:592:56:306:457:41
7:33
#4623
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 mi3631345734573486(Top 12%)3332(Top 20%)3332(Top 138%)
10K6.21 mi3.10 mi3348+2833206+2513206+2513131(Top 11%)3003(Top 18%)3003(Top 124%)
15K9.32 mi3.11 mi3389-413239-333239-333486(Top 12%)3332(Top 20%)3332(Top 138%)
20K12.43 mi3.11 mi3514-1253358-1193358-1194010(Top 14%)3797(Top 23%)3797(Top 157%)
HALF13.11 mi0.68 mi35143359-13359-13790(Top 13%)3607(Top 22%)3607(Top 149%)
25K15.53 mi2.42 mi3687-1733521-1623521-1624777(Top 16%)4423(Top 27%)4423(Top 183%)
30K18.64 mi3.11 mi3775-883591-703591-704537(Top 16%)4156(Top 25%)4156(Top 172%)
20M20.00 mi1.36 mi3749+263558+333558+334128(Top 14%)3786(Top 23%)3786(Top 157%)
21M21.00 mi1.00 mi3908-1593690-1323690-1327324(Top 25%)5953(Top 36%)5953(Top 247%)
35K21.75 mi0.75 mi3932-243706-163706-165278(Top 18%)4642(Top 28%)4642(Top 192%)
23M23.00 mi1.25 mi4026-943778-723778-726430(Top 22%)5378(Top 33%)5378(Top 223%)
24M24.00 mi1.00 mi4148-1223884-1063884-1067336(Top 25%)5867(Top 36%)5867(Top 243%)
40K24.85 mi0.85 mi4291-1433980-963980-968552(Top 29%)6453(Top 39%)6453(Top 267%)
25.2M25.20 mi0.35 mi4374-834048-684048-689584(Top 33%)6873(Top 42%)6873(Top 285%)
FINISH26.22 mi1.02 mi4623-2494246-1984246-19811688(Top 40%)7928(Top 49%)7928(Top 329%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
Γ—21
+97ft-345ft

Overall

3486

Males

3332

M45-49

3332

5K→10K

3.1 - 6.2 mi

Top 11%
Γ—5
+79ft-138ft

Overall

3131

Males

3003

M45-49

3003

10K→15K

6.2 - 9.3 mi

Top 12%
Γ—3
+67ft-78ft

Overall

3486

Males

3332

M45-49

3332

15K→20K

9.3 - 12.4 mi

Top 14%
Γ—5
+106ft-86ft

Overall

4010

Males

3797

M45-49

3797

20K→HALF

12.4 - 13.1 mi

Top 13%
Γ—2
+19ft-37ft

Overall

3790

Males

3607

M45-49

3607

HALF→25K

13.1 - 15.5 mi

Top 16%
Γ—4
+66ft-88ft

Overall

4777

Males

4423

M45-49

4423

25K→30K

15.5 - 18.6 mi

Top 16%
Γ—9
+181ft-148ft

Overall

4537

Males

4156

M45-49

4156

30K→20M

18.6 - 20.0 mi

Top 14%
Γ—5
+64ft-50ft

Overall

4128

Males

3786

M45-49

3786

20M→21M

20.0 - 21.0 mi

Top 25%
Γ—8
+106ft-24ft

Overall

7324

Males

5953

M45-49

5953

21M→35K

21.0 - 21.8 mi

Top 18%
Γ—7
+17ft-86ft

Overall

5278

Males

4642

M45-49

4642

35K→23M

21.8 - 23.0 mi

Top 22%
Γ—5
+23ft-63ft

Overall

6430

Males

5378

M45-49

5378

23M→24M

23.0 - 24.0 mi

Top 25%
Γ—6
+12ft-82ft

Overall

7336

Males

5867

M45-49

5867

24M→40K

24.0 - 24.9 mi

Top 29%
Γ—1
+6ft-20ft

Overall

8552

Males

6453

M45-49

6453

40K→25.2M

24.9 - 25.2 mi

Top 33%
Γ—1
+13ft-16ft

Overall

9584

Males

6873

M45-49

6873

25.2M→FINISH

25.2 - 26.2 mi

Top 40%
Γ—2
+22ft-21ft

Overall

11688

Males

7928

M45-49

7928

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
794
Passed By
1786
Net Change
-992
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#3631
5K β†’ 10K33350+283#3631#3348
10K β†’ 15K71112-41#3348#3389
15K β†’ 20K44169-125#3389#3514
20K β†’ HALF18180#3514#3514
HALF β†’ 25K37210-173#3514#3687
25K β†’ 30K74162-88#3687#3775
30K β†’ 20M7044+26#3775#3749
20M β†’ 21M14173-159#3749#3908
21M β†’ 35K2650-24#3908#3932
35K β†’ 23M34128-94#3932#4026
23M β†’ 24M25147-122#4026#4148
24M β†’ 40K28171-143#4148#4291
40K β†’ 25.2M689-83#4291#4374
25.2M β†’ FINISH14263-249#4374#4623
TOTALS7941786-992
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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing