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BOSTON MARATHON 2026

Karl Irwin

Bib: 20395•M

IL

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M60-64)
#0 / 1514
Top 36%
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
24:40
3.11 mi
Rank: #16480
Start → 5K
24:40 | 7:57/mi
10K
49:02
6.21 mi
Rank: #16229 (+251)
5K → 10K
24:22 | 7:51/mi
15K
1:13:15
9.32 mi
Rank: #15913 (+316)
10K → 15K
24:13 | 7:48/mi
20K
1:37:57
12.43 mi
Rank: #15844 (+69)
15K → 20K
24:42 | 7:58/mi
HALF
1:43:14
13.11 mi
Rank: #15810 (+34)
20K → HALF
5:17 | 7:46/mi
25K
2:02:30
15.53 mi
Rank: #15649 (+161)
HALF → 25K
19:16 | 7:57/mi
30K
2:28:20
18.64 mi
Rank: #15659 (-10)
25K → 30K
25:50 | 8:19/mi
20M
2:40:10
20.00 mi
Rank: #15801 (-142)
30K → 20M
11:50 | 8:43/mi
21M
2:49:36
21.00 mi
Rank: #15950 (-149)
20M → 21M
9:26 | 9:26/mi
35K
2:56:02
21.75 mi
Rank: #16000 (-50)
21M → 35K
6:26 | 8:36/mi
23M
3:07:28
23.00 mi
Rank: #16200 (-200)
35K → 23M
11:26 | 9:09/mi
24M
3:18:29
24.00 mi
Rank: #16917 (-717)
23M → 24M
11:01 | 11:01/mi
40K
3:26:51
24.85 mi
Rank: #17134 (-217)
24M → 40K
8:22 | 9:48/mi
25.2M
3:30:40
25.20 mi
Rank: #17262 (-128)
40K → 25.2M
3:49 | 11:05/mi
FINISH
3:40:09
26.22 mi
Rank: #17506 (-244)
25.2M → FINISH
9:29 | 9:19/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:43:14
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:56:55
Pace8:56 /mi
📊Positive Split: 13.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:09:4424:407:5724:40
7:57
-
10K
6.21 mi11:34:0649:027:5424:22
7:51
-0:06
15K
9.32 mi11:58:191:13:157:5224:13
7:48
-0:03
20K
12.43 mi12:23:011:37:577:5324:42
7:58
+0:10
HALF
13.11 mi12:28:181:43:147:535:17
7:46
-0:12
25K
15.53 mi12:47:342:02:307:5419:16
7:57
+0:11
30K
18.64 mi13:13:242:28:207:5825:50
8:19
+0:22
20M
20.00 mi13:25:142:40:108:0111:50
8:43
+0:24
21M
21.00 mi13:34:402:49:368:059:26
9:26
+0:43
35K
21.75 mi13:41:062:56:028:066:26
8:36
-0:50
23M
23.00 mi13:52:323:07:288:1011:26
9:09
+0:33
24M
24.00 mi14:03:333:18:298:1711:01
11:01
+1:52
40K
24.85 mi14:11:553:26:518:208:22
9:48
-1:13
25.2M
25.20 mi14:15:443:30:408:223:49
11:05
+1:17
FINISH
26.22 mi14:25:133:40:098:259:29
9:19
-1:46

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

7:46 /mi

Average Pace

8:24 /mi

Slowest Pace

11:05 /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

2:02:30

56% of race

Time at Steady Pace

44:06

20% of race

Time at Slower Pace

53:33

24% of race

Average Pace: 8:24 /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 mi11:09:4424:407:5724:40
7:57
#16480
10K
6.21 mi11:34:0649:027:5424:22
7:51
#16229
15K
9.32 mi11:58:191:13:157:5224:13
7:48
#15913
20K
12.43 mi12:23:011:37:577:5324:42
7:58
#15844
HALF
13.11 mi12:28:181:43:147:535:17
7:46
#15810
25K
15.53 mi12:47:342:02:307:5419:16
7:57
#15649
30K
18.64 mi13:13:242:28:207:5825:50
8:19
#15659
20M
20.00 mi13:25:142:40:108:0111:50
8:43
#15801
21M
21.00 mi13:34:402:49:368:059:26
9:26
#15950
35K
21.75 mi13:41:062:56:028:066:26
8:36
#16000
23M
23.00 mi13:52:323:07:288:1011:26
9:09
#16200
24M
24.00 mi14:03:333:18:298:1711:01
11:01
#16917
40K
24.85 mi14:11:553:26:518:208:22
9:48
#17134
25.2M
25.20 mi14:15:443:30:408:223:49
11:05
#17262
FINISH
26.22 mi14:25:133:40:098:259:29
9:19
#17506
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi16480108031080315300(Top 53%)10315(Top 63%)10315(Top 681%)
10K6.21 mi3.10 mi16229+25110687+11610687+11615993(Top 55%)10627(Top 65%)10627(Top 702%)
15K9.32 mi3.11 mi15913+31610567+12010567+12015300(Top 53%)10315(Top 63%)10315(Top 681%)
20K12.43 mi3.11 mi15844+6910521+4610521+4615741(Top 54%)10442(Top 64%)10442(Top 690%)
HALF13.11 mi0.68 mi15810+3410507+1410507+1415150(Top 52%)10295(Top 63%)10295(Top 680%)
25K15.53 mi2.42 mi15649+16110426+8110426+8114964(Top 52%)10058(Top 62%)10058(Top 664%)
30K18.64 mi3.11 mi15659-1010398+2810398+2815720(Top 54%)10291(Top 63%)10291(Top 680%)
20M20.00 mi1.36 mi15801-14210436-3810436-3817437(Top 60%)10939(Top 67%)10939(Top 723%)
21M21.00 mi1.00 mi15950-14910476-4010476-4018199(Top 63%)11241(Top 69%)11241(Top 742%)
35K21.75 mi0.75 mi16000-5010478-210478-218093(Top 62%)11082(Top 68%)11082(Top 732%)
23M23.00 mi1.25 mi16200-20010538-6010538-6019124(Top 66%)11515(Top 70%)11515(Top 761%)
24M24.00 mi1.00 mi16917-71710829-29110829-29125120(Top 87%)14368(Top 88%)14368(Top 949%)
40K24.85 mi0.85 mi17134-21710898-6910898-6921287(Top 73%)12472(Top 76%)12472(Top 824%)
25.2M25.20 mi0.35 mi17262-12810952-5410952-5422488(Top 77%)13057(Top 80%)13057(Top 862%)
FINISH26.22 mi1.02 mi17506-24411039-8711039-8721651(Top 75%)12677(Top 78%)12677(Top 837%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21
+97ft-345ft

Overall

15300

Males

10315

M60-64

10315

5K→10K

3.1 - 6.2 mi

Top 55%
×5
+79ft-138ft

Overall

15993

Males

10627

M60-64

10627

10K→15K

6.2 - 9.3 mi

Top 53%
×3
+67ft-78ft

Overall

15300

Males

10315

M60-64

10315

15K→20K

9.3 - 12.4 mi

Top 54%
×5
+106ft-86ft

Overall

15741

Males

10442

M60-64

10442

20K→HALF

12.4 - 13.1 mi

Top 52%
×2
+19ft-37ft

Overall

15150

Males

10295

M60-64

10295

HALF→25K

13.1 - 15.5 mi

Top 52%
×4
+66ft-88ft

Overall

14964

Males

10058

M60-64

10058

25K→30K

15.5 - 18.6 mi

Top 54%
×9
+181ft-148ft

Overall

15720

Males

10291

M60-64

10291

30K→20M

18.6 - 20.0 mi

Top 60%
×5
+64ft-50ft

Overall

17437

Males

10939

M60-64

10939

20M→21M

20.0 - 21.0 mi

Top 63%
×8
+106ft-24ft

Overall

18199

Males

11241

M60-64

11241

21M→35K

21.0 - 21.8 mi

Top 62%
×7
+17ft-86ft

Overall

18093

Males

11082

M60-64

11082

35K→23M

21.8 - 23.0 mi

Top 66%
×5
+23ft-63ft

Overall

19124

Males

11515

M60-64

11515

23M→24M

23.0 - 24.0 mi

Top 87%
×6
+12ft-82ft

Overall

25120

Males

14368

M60-64

14368

24M→40K

24.0 - 24.9 mi

Top 73%
×1
+6ft-20ft

Overall

21287

Males

12472

M60-64

12472

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1
+13ft-16ft

Overall

22488

Males

13057

M60-64

13057

25.2M→FINISH

25.2 - 26.2 mi

Top 75%
×2
+22ft-21ft

Overall

21651

Males

12677

M60-64

12677

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1775*
Passed By
2104
Net Change
-1026
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16480
5K → 10K428*177+251#16480#16229
10K → 15K395*79+316#16229#15913
15K → 20K213*144+69#15913#15844
20K → HALF5723+34#15844#15810
HALF → 25K220*59+161#15810#15649
25K → 30K198200-10#15649#15659
30K → 20M50192-142#15659#15801
20M → 21M63200-149#15801#15950
21M → 35K4797-50#15950#16000
35K → 23M54200-200#16000#16200
23M → 24M6200-717#16200#16917
24M → 40K24200-217#16917#17134
40K → 25.2M5133-128#17134#17262
25.2M → FINISH15200-244#17262#17506
TOTALS1775*2104-1026

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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