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BOSTON MARATHON 2026

Aidan O'Sullivan O'Sullivan

Bib: 27530•M

MA

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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Age Group (M18-39)
#0 / 5723
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
35:00
3.11 mi
Rank: #28318
Start → 5K
35:00 | 11:16/mi
10K
1:10:38
6.21 mi
Rank: #28280 (+38)
5K → 10K
35:38 | 11:29/mi
15K
1:46:43
9.32 mi
Rank: #28226 (+54)
10K → 15K
36:05 | 11:37/mi
20K
2:30:10
12.43 mi
Rank: #28530 (-304)
15K → 20K
43:27 | 14:00/mi
HALF
2:38:03
13.11 mi
Rank: #28503 (+27)
20K → HALF
7:53 | 11:34/mi
25K
3:15:05
15.53 mi
Rank: #28698 (-195)
HALF → 25K
37:02 | 15:17/mi
30K
4:01:21
18.64 mi
Rank: #28744 (-46)
25K → 30K
46:16 | 14:54/mi
20M
4:23:59
20.00 mi
Rank: #28790 (-46)
30K → 20M
22:38 | 16:40/mi
21M
4:38:20
21.00 mi
Rank: #28762 (+28)
20M → 21M
14:21 | 14:21/mi
35K
4:48:56
21.75 mi
Rank: #28761 (+1)
21M → 35K
10:36 | 14:11/mi
23M
5:06:12
23.00 mi
Rank: #28735 (+26)
35K → 23M
17:16 | 13:48/mi
24M
5:19:45
24.00 mi
Rank: #28720 (+15)
23M → 24M
13:33 | 13:33/mi
40K
5:32:14
24.85 mi
Rank: #28716 (+4)
24M → 40K
12:29 | 14:37/mi
25.2M
5:36:52
25.20 mi
Rank: #28701 (+15)
40K → 25.2M
4:38 | 13:27/mi
FINISH
5:48:27
26.22 mi
Rank: #28667 (+34)
25.2M → FINISH
11:35 | 11:23/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:38:03
Pace12:04 /mi
2nd Half
Distance13.11 mi
Time3:10:24
Pace14:32 /mi
📊Positive Split: 20.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:4435:0011:1635:00
11:16
-
10K
6.21 mi12:32:221:10:3811:2335:38
11:29
+0:13
15K
9.32 mi13:08:271:46:4311:2736:05
11:37
+0:08
20K
12.43 mi13:51:542:30:1012:0643:27
14:00
+2:23
HALF
13.11 mi13:59:472:38:0312:047:53
11:34
-2:26
25K
15.53 mi14:36:493:15:0512:3437:02
15:17
+3:43
30K
18.64 mi15:23:054:01:2112:5746:16
14:54
-0:23
20M
20.00 mi15:45:434:23:5913:1222:38
16:40
+1:46
21M
21.00 mi16:00:044:38:2013:1614:21
14:21
-2:19
35K
21.75 mi16:10:404:48:5613:1810:36
14:11
-0:10
23M
23.00 mi16:27:565:06:1213:1917:16
13:48
-0:23
24M
24.00 mi16:41:295:19:4513:2013:33
13:33
-0:15
40K
24.85 mi16:53:585:32:1413:2312:29
14:37
+1:04
25.2M
25.20 mi16:58:365:36:5213:234:38
13:27
-1:10
FINISH
26.22 mi17:10:115:48:2713:1811:35
11:23
-2:04

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

11:16 /mi

Average Pace

13:18 /mi

Slowest Pace

16:40 /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

2:06:11

36% of race

Time at Steady Pace

1:43:51

30% of race

Time at Slower Pace

1:58:25

34% of race

Average Pace: 13:17 /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 mi11:56:4435:0011:1635:00
11:16
#28318
10K
6.21 mi12:32:221:10:3811:2335:38
11:29
#28280
15K
9.32 mi13:08:271:46:4311:2736:05
11:37
#28226
20K
12.43 mi13:51:542:30:1012:0643:27
14:00
#28530
HALF
13.11 mi13:59:472:38:0312:047:53
11:34
#28503
25K
15.53 mi14:36:493:15:0512:3437:02
15:17
#28698
30K
18.64 mi15:23:054:01:2112:5746:16
14:54
#28744
20M
20.00 mi15:45:434:23:5913:1222:38
16:40
#28790
21M
21.00 mi16:00:044:38:2013:1614:21
14:21
#28762
35K
21.75 mi16:10:404:48:5613:1810:36
14:11
#28761
23M
23.00 mi16:27:565:06:1213:1917:16
13:48
#28735
24M
24.00 mi16:41:295:19:4513:2013:33
13:33
#28720
40K
24.85 mi16:53:585:32:1413:2312:29
14:37
#28716
25.2M
25.20 mi16:58:365:36:5213:234:38
13:27
#28701
FINISH
26.22 mi17:10:115:48:2713:1811:35
11:23
#28667
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi28318161231612328079(Top 97%)16011(Top 98%)16011(Top 280%)
10K6.21 mi3.10 mi28280+3816110+1316110+1328201(Top 97%)16068(Top 98%)16068(Top 281%)
15K9.32 mi3.11 mi28226+5416088+2216088+2228079(Top 97%)16011(Top 98%)16011(Top 280%)
20K12.43 mi3.11 mi28530-30416187-9916187-9928895(Top 100%)16286(Top 100%)16286(Top 285%)
HALF13.11 mi0.68 mi28503+2716177+1016177+1027928(Top 96%)15917(Top 97%)15917(Top 278%)
25K15.53 mi2.42 mi28698-19516234-5716234-5728932(Top 100%)16300(Top 100%)16300(Top 285%)
30K18.64 mi3.11 mi28744-4616244-1016244-1028744(Top 99%)16207(Top 99%)16207(Top 283%)
20M20.00 mi1.36 mi28790-4616254-1016254-1028904(Top 100%)16285(Top 100%)16285(Top 285%)
21M21.00 mi1.00 mi28762+2816244+1016244+1027614(Top 95%)15655(Top 96%)15655(Top 274%)
35K21.75 mi0.75 mi28761+116239+516239+528430(Top 98%)16020(Top 98%)16020(Top 280%)
23M23.00 mi1.25 mi28735+2616231+816231+828000(Top 96%)15821(Top 97%)15821(Top 276%)
24M24.00 mi1.00 mi28720+1516220+1116220+1128055(Top 97%)15818(Top 97%)15818(Top 276%)
40K24.85 mi0.85 mi28716+416221-116221-128265(Top 97%)15913(Top 97%)15913(Top 278%)
25.2M25.20 mi0.35 mi28701+1516217+416217+426608(Top 92%)15094(Top 92%)15094(Top 264%)
FINISH26.22 mi1.02 mi28667+3416201+1616201+1626708(Top 92%)15117(Top 93%)15117(Top 264%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21
+97ft-345ft

Overall

28079

Males

16011

M18-39

16011

5K→10K

3.1 - 6.2 mi

Top 97%
×5
+79ft-138ft

Overall

28201

Males

16068

M18-39

16068

10K→15K

6.2 - 9.3 mi

Top 97%
×3
+67ft-78ft

Overall

28079

Males

16011

M18-39

16011

15K→20K

9.3 - 12.4 mi

Top 100%
×5
+106ft-86ft

Overall

28895

Males

16286

M18-39

16286

20K→HALF

12.4 - 13.1 mi

Top 96%
×2
+19ft-37ft

Overall

27928

Males

15917

M18-39

15917

HALF→25K

13.1 - 15.5 mi

Top 100%
×4
+66ft-88ft

Overall

28932

Males

16300

M18-39

16300

25K→30K

15.5 - 18.6 mi

Top 99%
×9
+181ft-148ft

Overall

28744

Males

16207

M18-39

16207

30K→20M

18.6 - 20.0 mi

Top 100%
×5
+64ft-50ft

Overall

28904

Males

16285

M18-39

16285

20M→21M

20.0 - 21.0 mi

Top 95%
×8
+106ft-24ft

Overall

27614

Males

15655

M18-39

15655

21M→35K

21.0 - 21.8 mi

Top 98%
×7
+17ft-86ft

Overall

28430

Males

16020

M18-39

16020

35K→23M

21.8 - 23.0 mi

Top 96%
×5
+23ft-63ft

Overall

28000

Males

15821

M18-39

15821

23M→24M

23.0 - 24.0 mi

Top 97%
×6
+12ft-82ft

Overall

28055

Males

15818

M18-39

15818

24M→40K

24.0 - 24.9 mi

Top 97%
×1
+6ft-20ft

Overall

28265

Males

15913

M18-39

15913

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1
+13ft-16ft

Overall

26608

Males

15094

M18-39

15094

25.2M→FINISH

25.2 - 26.2 mi

Top 92%
×2
+22ft-21ft

Overall

26708

Males

15117

M18-39

15117

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
430
Passed By
779
Net Change
-349
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28318
5K → 10K12183+38#28318#28280
10K → 15K10753+54#28280#28226
15K → 20K0304-304#28226#28530
20K → HALF281+27#28530#28503
HALF → 25K9204-195#28503#28698
25K → 30K2167-46#28698#28744
30K → 20M248-46#28744#28790
20M → 21M291+28#28790#28762
21M → 35K76+1#28762#28761
35K → 23M271+26#28761#28735
23M → 24M183+15#28735#28720
24M → 40K117+4#28720#28716
40K → 25.2M150+15#28716#28701
25.2M → FINISH351+34#28701#28667
TOTALS430779-349
📊

Passing Analysis Visualizations

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

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race 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