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BOSTON MARATHON 2026

Tom Casserley

Bib: 10483β€’M

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 45%
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Top 47%
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
22:27
3.11 mi
Rank: #10409
Start β†’ 5K
22:27 | 7:14/mi
10K
44:59
6.21 mi
Rank: #10568 (-159)
5K β†’ 10K
22:32 | 7:16/mi
15K
1:07:45
9.32 mi
Rank: #10766 (-198)
10K β†’ 15K
22:46 | 7:20/mi
20K
1:30:44
12.43 mi
Rank: #10828 (-62)
15K β†’ 20K
22:59 | 7:24/mi
HALF
1:35:36
13.11 mi
Rank: #10743 (+85)
20K β†’ HALF
4:52 | 7:09/mi
25K
1:53:34
15.53 mi
Rank: #10681 (+62)
HALF β†’ 25K
17:58 | 7:25/mi
30K
2:18:25
18.64 mi
Rank: #11253 (-572)
25K β†’ 30K
24:51 | 8:00/mi
20M
2:29:36
20.00 mi
Rank: #11484 (-231)
30K β†’ 20M
11:11 | 8:14/mi
21M
2:38:25
21.00 mi
Rank: #11683 (-199)
20M β†’ 21M
8:49 | 8:49/mi
35K
2:44:52
21.75 mi
Rank: #11967 (-284)
21M β†’ 35K
6:27 | 8:38/mi
23M
2:55:44
23.00 mi
Rank: #12277 (-310)
35K β†’ 23M
10:52 | 8:41/mi
24M
3:04:16
24.00 mi
Rank: #12488 (-211)
23M β†’ 24M
8:32 | 8:32/mi
40K
3:11:45
24.85 mi
Rank: #12677 (-189)
24M β†’ 40K
7:29 | 8:46/mi
25.2M
3:15:01
25.20 mi
Rank: #12743 (-66)
40K β†’ 25.2M
3:16 | 9:29/mi
FINISH
3:23:42
26.22 mi
Rank: #12982 (-239)
25.2M β†’ FINISH
8:41 | 8:32/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:35:36
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:48:06
Pace8:15 /mi
πŸ“ŠPositive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:39:1022:277:1422:27
7:14
-
10K
6.21 mi11:01:4244:597:1522:32
7:16
+0:02
15K
9.32 mi11:24:281:07:457:1722:46
7:20
+0:04
20K
12.43 mi11:47:271:30:447:1922:59
7:24
+0:04
HALF
13.11 mi11:52:191:35:367:184:52
7:09
-0:15
25K
15.53 mi12:10:171:53:347:1917:58
7:25
+0:16
30K
18.64 mi12:35:082:18:257:2624:51
8:00
+0:35
20M
20.00 mi12:46:192:29:367:2911:11
8:14
+0:14
21M
21.00 mi12:55:082:38:257:338:49
8:49
+0:35
35K
21.75 mi13:01:352:44:527:356:27
8:38
-0:11
23M
23.00 mi13:12:272:55:447:3910:52
8:41
+0:03
24M
24.00 mi13:20:593:04:167:418:32
8:32
-0:09
40K
24.85 mi13:28:283:11:457:437:29
8:46
+0:14
25.2M
25.20 mi13:31:443:15:017:453:16
9:29
+0:43
FINISH
26.22 mi13:40:253:23:427:478:41
8:32
-0:57

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

7:09 /mi

Average Pace

7:46 /mi

Slowest Pace

9:29 /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

1:53:34

56% of race

Time at Steady Pace

53:15

26% of race

Time at Slower Pace

36:53

18% of race

Average Pace: 7:46 /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 mi10:39:1022:277:1422:27
7:14
#10409
10K
6.21 mi11:01:4244:597:1522:32
7:16
#10568
15K
9.32 mi11:24:281:07:457:1722:46
7:20
#10766
20K
12.43 mi11:47:271:30:447:1922:59
7:24
#10828
HALF
13.11 mi11:52:191:35:367:184:52
7:09
#10743
25K
15.53 mi12:10:171:53:347:1917:58
7:25
#10681
30K
18.64 mi12:35:082:18:257:2624:51
8:00
#11253
20M
20.00 mi12:46:192:29:367:2911:11
8:14
#11484
21M
21.00 mi12:55:082:38:257:338:49
8:49
#11683
35K
21.75 mi13:01:352:44:527:356:27
8:38
#11967
23M
23.00 mi13:12:272:55:447:3910:52
8:41
#12277
24M
24.00 mi13:20:593:04:167:418:32
8:32
#12488
40K
24.85 mi13:28:283:11:457:437:29
8:46
#12677
25.2M
25.20 mi13:31:443:15:017:453:16
9:29
#12743
FINISH
26.22 mi13:40:253:23:427:478:41
8:32
#12982
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 mi104098294829411305(Top 39%)8630(Top 53%)8630(Top 358%)
10K6.21 mi3.10 mi10568-1598357-638357-6310714(Top 37%)8420(Top 52%)8420(Top 349%)
15K9.32 mi3.11 mi10766-1988421-648421-6411305(Top 39%)8630(Top 53%)8630(Top 358%)
20K12.43 mi3.11 mi10828-628412+98412+911105(Top 38%)8432(Top 52%)8432(Top 349%)
HALF13.11 mi0.68 mi10743+858373+398373+399770(Top 34%)7888(Top 48%)7888(Top 327%)
25K15.53 mi2.42 mi10681+628298+758298+7510639(Top 37%)8159(Top 50%)8159(Top 338%)
30K18.64 mi3.11 mi11253-5728548-2508548-25013461(Top 46%)9312(Top 57%)9312(Top 386%)
20M20.00 mi1.36 mi11484-2318628-808628-8014448(Top 50%)9660(Top 59%)9660(Top 400%)
21M21.00 mi1.00 mi11683-1998703-758703-7515042(Top 52%)9824(Top 60%)9824(Top 407%)
35K21.75 mi0.75 mi11967-2848806-1038806-10318179(Top 63%)11116(Top 68%)11116(Top 461%)
23M23.00 mi1.25 mi12277-3108903-978903-9716782(Top 58%)10411(Top 64%)10411(Top 431%)
24M24.00 mi1.00 mi12488-2118970-678970-6717071(Top 59%)10491(Top 64%)10491(Top 435%)
40K24.85 mi0.85 mi12677-1899041-719041-7117084(Top 59%)10450(Top 64%)10450(Top 433%)
25.2M25.20 mi0.35 mi12743-669056-159056-1517113(Top 59%)10460(Top 64%)10460(Top 433%)
FINISH26.22 mi1.02 mi12982-2399134-789134-7818242(Top 63%)10998(Top 67%)10998(Top 456%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
Γ—21
+97ft-345ft

Overall

11305

Males

8630

M45-49

8630

5K→10K

3.1 - 6.2 mi

Top 37%
Γ—5
+79ft-138ft

Overall

10714

Males

8420

M45-49

8420

10K→15K

6.2 - 9.3 mi

Top 39%
Γ—3
+67ft-78ft

Overall

11305

Males

8630

M45-49

8630

15K→20K

9.3 - 12.4 mi

Top 38%
Γ—5
+106ft-86ft

Overall

11105

Males

8432

M45-49

8432

20K→HALF

12.4 - 13.1 mi

Top 34%
Γ—2
+19ft-37ft

Overall

9770

Males

7888

M45-49

7888

HALF→25K

13.1 - 15.5 mi

Top 37%
Γ—4
+66ft-88ft

Overall

10639

Males

8159

M45-49

8159

25K→30K

15.5 - 18.6 mi

Top 46%
Γ—9
+181ft-148ft

Overall

13461

Males

9312

M45-49

9312

30K→20M

18.6 - 20.0 mi

Top 50%
Γ—5
+64ft-50ft

Overall

14448

Males

9660

M45-49

9660

20M→21M

20.0 - 21.0 mi

Top 52%
Γ—8
+106ft-24ft

Overall

15042

Males

9824

M45-49

9824

21M→35K

21.0 - 21.8 mi

Top 63%
Γ—7
+17ft-86ft

Overall

18179

Males

11116

M45-49

11116

35K→23M

21.8 - 23.0 mi

Top 58%
Γ—5
+23ft-63ft

Overall

16782

Males

10411

M45-49

10411

23M→24M

23.0 - 24.0 mi

Top 59%
Γ—6
+12ft-82ft

Overall

17071

Males

10491

M45-49

10491

24M→40K

24.0 - 24.9 mi

Top 59%
Γ—1
+6ft-20ft

Overall

17084

Males

10450

M45-49

10450

40K→25.2M

24.9 - 25.2 mi

Top 59%
Γ—1
+13ft-16ft

Overall

17113

Males

10460

M45-49

10460

25.2M→FINISH

25.2 - 26.2 mi

Top 63%
Γ—2
+22ft-21ft

Overall

18242

Males

10998

M45-49

10998

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
976
Passed By
3548
Net Change
-2573
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#10409
5K β†’ 10K171329-159#10409#10568
10K β†’ 15K98296-198#10568#10766
15K β†’ 20K140202-62#10766#10828
20K β†’ HALF905+85#10828#10743
HALF β†’ 25K168106+62#10743#10681
25K β†’ 30K68640-572#10681#11253
30K β†’ 20M40271-231#11253#11484
20M β†’ 21M36235-199#11484#11683
21M β†’ 35K14298-284#11683#11967
35K β†’ 23M48358-310#11967#12277
23M β†’ 24M33244-211#12277#12488
24M β†’ 40K27216-189#12488#12677
40K β†’ 25.2M1682-66#12677#12743
25.2M β†’ FINISH27266-239#12743#12982
TOTALS9763548-2573
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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing