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BOSTON MARATHON 2026

Seamus Duncan

Bib: 6517•M

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 20%
Gender (Male)
#0 / 16340
Top 32%
Masters (Masters Men)
#0 / 10617
Top 18%
Age Group (M40-44)
#0 / 2198
Top 44%
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
20:20
3.11 mi
Rank: #4565
Start → 5K
20:20 | 6:33/mi
10K
40:57
6.21 mi
Rank: #4913 (-348)
5K → 10K
20:37 | 6:39/mi
15K
1:01:37
9.32 mi
Rank: #5056 (-143)
10K → 15K
20:40 | 6:40/mi
20K
1:22:26
12.43 mi
Rank: #5042 (+14)
15K → 20K
20:49 | 6:43/mi
HALF
1:27:00
13.11 mi
Rank: #5077 (-35)
20K → HALF
4:34 | 6:42/mi
25K
1:43:29
15.53 mi
Rank: #5142 (-65)
HALF → 25K
16:29 | 6:48/mi
30K
2:05:06
18.64 mi
Rank: #5173 (-31)
25K → 30K
21:37 | 6:58/mi
20M
2:14:56
20.00 mi
Rank: #5344 (-171)
30K → 20M
9:50 | 7:15/mi
21M
2:22:30
21.00 mi
Rank: #5446 (-102)
20M → 21M
7:34 | 7:34/mi
35K
2:27:41
21.75 mi
Rank: #5467 (-21)
21M → 35K
5:11 | 6:56/mi
23M
2:36:52
23.00 mi
Rank: #5590 (-123)
35K → 23M
9:11 | 7:21/mi
24M
2:44:12
24.00 mi
Rank: #5763 (-173)
23M → 24M
7:20 | 7:20/mi
40K
2:50:28
24.85 mi
Rank: #5821 (-58)
24M → 40K
6:16 | 7:20/mi
25.2M
2:53:11
25.20 mi
Rank: #5857 (-36)
40K → 25.2M
2:43 | 7:53/mi
FINISH
3:00:07
26.22 mi
Rank: #5883 (-26)
25.2M → FINISH
6:56 | 6:49/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:27:00
Pace6:39 /mi
2nd Half
Distance13.11 mi
Time1:33:07
Pace7:07 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:4220:206:3320:20
6:33
-
10K
6.21 mi10:45:1940:576:3620:37
6:39
+0:06
15K
9.32 mi11:05:591:01:376:3720:40
6:40
+0:01
20K
12.43 mi11:26:481:22:266:3820:49
6:43
+0:03
HALF
13.11 mi11:31:221:27:006:394:34
6:42
-0:01
25K
15.53 mi11:47:511:43:296:4016:29
6:48
+0:06
30K
18.64 mi12:09:282:05:066:4321:37
6:58
+0:10
20M
20.00 mi12:19:182:14:566:459:50
7:15
+0:17
21M
21.00 mi12:26:522:22:306:487:34
7:34
+0:19
35K
21.75 mi12:32:032:27:416:485:11
6:56
-0:38
23M
23.00 mi12:41:142:36:526:509:11
7:21
+0:25
24M
24.00 mi12:48:342:44:126:517:20
7:20
-0:01
40K
24.85 mi12:54:502:50:286:526:16
7:20
0:00
25.2M
25.20 mi12:57:332:53:116:532:43
7:53
+0:33
FINISH
26.22 mi13:04:293:00:076:536:56
6:49
-1:04

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

6:33 /mi

Average Pace

6:52 /mi

Slowest Pace

7:53 /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

1:27:00

48% of race

Time at Steady Pace

50:13

28% of race

Time at Slower Pace

42:54

24% of race

Average Pace: 6:52 /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 mi10:24:4220:206:3320:20
6:33
#4565
10K
6.21 mi10:45:1940:576:3620:37
6:39
#4913
15K
9.32 mi11:05:591:01:376:3720:40
6:40
#5056
20K
12.43 mi11:26:481:22:266:3820:49
6:43
#5042
HALF
13.11 mi11:31:221:27:006:394:34
6:42
#5077
25K
15.53 mi11:47:511:43:296:4016:29
6:48
#5142
30K
18.64 mi12:09:282:05:066:4321:37
6:58
#5173
20M
20.00 mi12:19:182:14:566:459:50
7:15
#5344
21M
21.00 mi12:26:522:22:306:487:34
7:34
#5446
35K
21.75 mi12:32:032:27:416:485:11
6:56
#5467
23M
23.00 mi12:41:142:36:526:509:11
7:21
#5590
24M
24.00 mi12:48:342:44:126:517:20
7:20
#5763
40K
24.85 mi12:54:502:50:286:526:16
7:20
#5821
25.2M
25.20 mi12:57:332:53:116:532:43
7:53
#5857
FINISH
26.22 mi13:04:293:00:076:536:56
6:49
#5883
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4565429442945373(Top 19%)4974(Top 30%)4974(Top 226%)
10K6.21 mi3.10 mi4913-3484595-3014595-3015345(Top 18%)4947(Top 30%)4947(Top 225%)
15K9.32 mi3.11 mi5056-1434714-1194714-1195373(Top 19%)4974(Top 30%)4974(Top 226%)
20K12.43 mi3.11 mi5042+144700+144700+145196(Top 18%)4799(Top 29%)4799(Top 218%)
HALF13.11 mi0.68 mi5077-354729-294729-296132(Top 21%)5519(Top 34%)5519(Top 251%)
25K15.53 mi2.42 mi5142-654777-484777-485767(Top 20%)5193(Top 32%)5193(Top 236%)
30K18.64 mi3.11 mi5173-314784-74784-75582(Top 19%)4992(Top 31%)4992(Top 227%)
20M20.00 mi1.36 mi5344-1714912-1284912-1287206(Top 25%)6027(Top 37%)6027(Top 274%)
21M21.00 mi1.00 mi5446-1024974-624974-626890(Top 24%)5700(Top 35%)5700(Top 259%)
35K21.75 mi0.75 mi5467-214980-64980-66551(Top 23%)5522(Top 34%)5522(Top 251%)
23M23.00 mi1.25 mi5590-1235061-815061-817692(Top 27%)6166(Top 38%)6166(Top 281%)
24M24.00 mi1.00 mi5763-1735181-1205181-1208802(Top 30%)6678(Top 41%)6678(Top 304%)
40K24.85 mi0.85 mi5821-585221-405221-407611(Top 26%)5946(Top 36%)5946(Top 271%)
25.2M25.20 mi0.35 mi5857-365243-225243-227467(Top 26%)5798(Top 35%)5798(Top 264%)
FINISH26.22 mi1.02 mi5883-265256-135256-136120(Top 21%)4941(Top 30%)4941(Top 225%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21
+97ft-345ft

Overall

5373

Males

4974

M40-44

4974

5K→10K

3.1 - 6.2 mi

Top 18%
×5
+79ft-138ft

Overall

5345

Males

4947

M40-44

4947

10K→15K

6.2 - 9.3 mi

Top 19%
×3
+67ft-78ft

Overall

5373

Males

4974

M40-44

4974

15K→20K

9.3 - 12.4 mi

Top 18%
×5
+106ft-86ft

Overall

5196

Males

4799

M40-44

4799

20K→HALF

12.4 - 13.1 mi

Top 21%
×2
+19ft-37ft

Overall

6132

Males

5519

M40-44

5519

HALF→25K

13.1 - 15.5 mi

Top 20%
×4
+66ft-88ft

Overall

5767

Males

5193

M40-44

5193

25K→30K

15.5 - 18.6 mi

Top 19%
×9
+181ft-148ft

Overall

5582

Males

4992

M40-44

4992

30K→20M

18.6 - 20.0 mi

Top 25%
×5
+64ft-50ft

Overall

7206

Males

6027

M40-44

6027

20M→21M

20.0 - 21.0 mi

Top 24%
×8
+106ft-24ft

Overall

6890

Males

5700

M40-44

5700

21M→35K

21.0 - 21.8 mi

Top 23%
×7
+17ft-86ft

Overall

6551

Males

5522

M40-44

5522

35K→23M

21.8 - 23.0 mi

Top 27%
×5
+23ft-63ft

Overall

7692

Males

6166

M40-44

6166

23M→24M

23.0 - 24.0 mi

Top 30%
×6
+12ft-82ft

Overall

8802

Males

6678

M40-44

6678

24M→40K

24.0 - 24.9 mi

Top 26%
×1
+6ft-20ft

Overall

7611

Males

5946

M40-44

5946

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1
+13ft-16ft

Overall

7467

Males

5798

M40-44

5798

25.2M→FINISH

25.2 - 26.2 mi

Top 21%
×2
+22ft-21ft

Overall

6120

Males

4941

M40-44

4941

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
705
Passed By
1820
Net Change
-1318
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4565
5K → 10K51200-348#4565#4913
10K → 15K52195-143#4913#5056
15K → 20K10692+14#5056#5042
20K → HALF742-35#5042#5077
HALF → 25K71136-65#5077#5142
25K → 30K129160-31#5142#5173
30K → 20M22193-171#5173#5344
20M → 21M35137-102#5344#5446
21M → 35K4465-21#5446#5467
35K → 23M40163-123#5467#5590
23M → 24M31200-173#5590#5763
24M → 40K43101-58#5763#5821
40K → 25.2M1753-36#5821#5857
25.2M → FINISH5783-26#5857#5883
TOTALS7051820-1318
📊

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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing