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BOSTON MARATHON 2026

Stefan Gudmundson

Bib: 19480•M

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0:00
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Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M55-59)
#0 / 1491
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
24:03
3.11 mi
Rank: #14906
Start → 5K
24:03 | 7:45/mi
10K
47:50
6.21 mi
Rank: #14616 (+290)
5K → 10K
23:47 | 7:40/mi
15K
1:12:04
9.32 mi
Rank: #14811 (-195)
10K → 15K
24:14 | 7:48/mi
20K
1:36:32
12.43 mi
Rank: #14886 (-75)
15K → 20K
24:28 | 7:53/mi
HALF
1:41:49
13.11 mi
Rank: #14890 (-4)
20K → HALF
5:17 | 7:46/mi
25K
2:01:03
15.53 mi
Rank: #14873 (+17)
HALF → 25K
19:14 | 7:56/mi
30K
2:26:49
18.64 mi
Rank: #14975 (-102)
25K → 30K
25:46 | 8:18/mi
20M
2:38:01
20.00 mi
Rank: #14948 (+27)
30K → 20M
11:12 | 8:15/mi
21M
2:46:51
21.00 mi
Rank: #14912 (+36)
20M → 21M
8:50 | 8:50/mi
35K
2:52:53
21.75 mi
Rank: #14911 (+1)
21M → 35K
6:02 | 8:04/mi
23M
3:04:09
23.00 mi
Rank: #15182 (-271)
35K → 23M
11:16 | 9:01/mi
24M
3:12:51
24.00 mi
Rank: #15329 (-147)
23M → 24M
8:42 | 8:42/mi
40K
3:20:15
24.85 mi
Rank: #15375 (-46)
24M → 40K
7:24 | 8:40/mi
25.2M
3:23:42
25.20 mi
Rank: #15454 (-79)
40K → 25.2M
3:27 | 10:01/mi
FINISH
3:32:02
26.22 mi
Rank: #15501 (-47)
25.2M → FINISH
8:20 | 8:11/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:41:49
Pace7:47 /mi
2nd Half
Distance13.11 mi
Time1:50:13
Pace8:25 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:08:1124:037:4524:03
7:45
-
10K
6.21 mi11:31:5847:507:4223:47
7:40
-0:05
15K
9.32 mi11:56:121:12:047:4424:14
7:48
+0:08
20K
12.43 mi12:20:401:36:327:4724:28
7:53
+0:05
HALF
13.11 mi12:25:571:41:497:475:17
7:46
-0:07
25K
15.53 mi12:45:112:01:037:4819:14
7:56
+0:10
30K
18.64 mi13:10:572:26:497:5325:46
8:18
+0:22
20M
20.00 mi13:22:092:38:017:5511:12
8:15
-0:03
21M
21.00 mi13:30:592:46:517:578:50
8:50
+0:35
35K
21.75 mi13:37:012:52:537:576:02
8:04
-0:46
23M
23.00 mi13:48:173:04:098:0111:16
9:01
+0:57
24M
24.00 mi13:56:593:12:518:038:42
8:42
-0:19
40K
24.85 mi14:04:233:20:158:047:24
8:40
-0:02
25.2M
25.20 mi14:07:503:23:428:063:27
10:01
+1:21
FINISH
26.22 mi14:16:103:32:028:068:20
8:11
-1:50

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

7:40 /mi

Average Pace

8:06 /mi

Slowest Pace

10:01 /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

1:17:21

36% of race

Time at Steady Pace

1:35:02

45% of race

Time at Slower Pace

39:39

19% of race

Average Pace: 8:05 /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 mi11:08:1124:037:4524:03
7:45
#14906
10K
6.21 mi11:31:5847:507:4223:47
7:40
#14616
15K
9.32 mi11:56:121:12:047:4424:14
7:48
#14811
20K
12.43 mi12:20:401:36:327:4724:28
7:53
#14886
HALF
13.11 mi12:25:571:41:497:475:17
7:46
#14890
25K
15.53 mi12:45:112:01:037:4819:14
7:56
#14873
30K
18.64 mi13:10:572:26:497:5325:46
8:18
#14975
20M
20.00 mi13:22:092:38:017:5511:12
8:15
#14948
21M
21.00 mi13:30:592:46:517:578:50
8:50
#14912
35K
21.75 mi13:37:012:52:537:576:02
8:04
#14911
23M
23.00 mi13:48:173:04:098:0111:16
9:01
#15182
24M
24.00 mi13:56:593:12:518:038:42
8:42
#15329
40K
24.85 mi14:04:233:20:158:047:24
8:40
#15375
25.2M
25.20 mi14:07:503:23:428:063:27
10:01
#15454
FINISH
26.22 mi14:16:103:32:028:068:20
8:11
#15501
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi14906102201022015336(Top 53%)10330(Top 63%)10330(Top 693%)
10K6.21 mi3.10 mi14616+29010097+12310097+12314369(Top 50%)9982(Top 61%)9982(Top 669%)
15K9.32 mi3.11 mi14811-19510135-3810135-3815336(Top 53%)10330(Top 63%)10330(Top 693%)
20K12.43 mi3.11 mi14886-7510150-1510150-1515125(Top 52%)10196(Top 62%)10196(Top 684%)
HALF13.11 mi0.68 mi14890-410152-210152-215115(Top 52%)10260(Top 63%)10260(Top 688%)
25K15.53 mi2.42 mi14873+1710143+910143+914841(Top 51%)10006(Top 61%)10006(Top 671%)
30K18.64 mi3.11 mi14975-10210137+610137+615560(Top 54%)10222(Top 63%)10222(Top 686%)
20M20.00 mi1.36 mi14948+2710093+4410093+4414542(Top 50%)9710(Top 59%)9710(Top 651%)
21M21.00 mi1.00 mi14912+3610045+4810045+4815162(Top 52%)9886(Top 61%)9886(Top 663%)
35K21.75 mi0.75 mi14911+110032+1310032+1314904(Top 51%)9718(Top 59%)9718(Top 652%)
23M23.00 mi1.25 mi15182-27110121-8910121-8918484(Top 64%)11205(Top 69%)11205(Top 752%)
24M24.00 mi1.00 mi15329-14710164-4310164-4317979(Top 62%)10927(Top 67%)10927(Top 733%)
40K24.85 mi0.85 mi15375-4610165-110165-116566(Top 57%)10219(Top 63%)10219(Top 685%)
25.2M25.20 mi0.35 mi15454-7910181-1610181-1619365(Top 67%)11531(Top 71%)11531(Top 773%)
FINISH26.22 mi1.02 mi15501-4710185-410185-416272(Top 56%)10114(Top 62%)10114(Top 678%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21
+97ft-345ft

Overall

15336

Males

10330

M55-59

10330

5K→10K

3.1 - 6.2 mi

Top 50%
×5
+79ft-138ft

Overall

14369

Males

9982

M55-59

9982

10K→15K

6.2 - 9.3 mi

Top 53%
×3
+67ft-78ft

Overall

15336

Males

10330

M55-59

10330

15K→20K

9.3 - 12.4 mi

Top 52%
×5
+106ft-86ft

Overall

15125

Males

10196

M55-59

10196

20K→HALF

12.4 - 13.1 mi

Top 52%
×2
+19ft-37ft

Overall

15115

Males

10260

M55-59

10260

HALF→25K

13.1 - 15.5 mi

Top 51%
×4
+66ft-88ft

Overall

14841

Males

10006

M55-59

10006

25K→30K

15.5 - 18.6 mi

Top 54%
×9
+181ft-148ft

Overall

15560

Males

10222

M55-59

10222

30K→20M

18.6 - 20.0 mi

Top 50%
×5
+64ft-50ft

Overall

14542

Males

9710

M55-59

9710

20M→21M

20.0 - 21.0 mi

Top 52%
×8
+106ft-24ft

Overall

15162

Males

9886

M55-59

9886

21M→35K

21.0 - 21.8 mi

Top 51%
×7
+17ft-86ft

Overall

14904

Males

9718

M55-59

9718

35K→23M

21.8 - 23.0 mi

Top 64%
×5
+23ft-63ft

Overall

18484

Males

11205

M55-59

11205

23M→24M

23.0 - 24.0 mi

Top 62%
×6
+12ft-82ft

Overall

17979

Males

10927

M55-59

10927

24M→40K

24.0 - 24.9 mi

Top 57%
×1
+6ft-20ft

Overall

16566

Males

10219

M55-59

10219

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1
+13ft-16ft

Overall

19365

Males

11531

M55-59

11531

25.2M→FINISH

25.2 - 26.2 mi

Top 56%
×2
+22ft-21ft

Overall

16272

Males

10114

M55-59

10114

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1588*
Passed By
1833
Net Change
-595
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14906
5K → 10K472*182+290#14906#14616
10K → 15K143200-195#14616#14811
15K → 20K158200-75#14811#14886
20K → HALF3135-4#14886#14890
HALF → 25K148131+17#14890#14873
25K → 30K164200-102#14873#14975
30K → 20M10679+27#14975#14948
20M → 21M12387+36#14948#14912
21M → 35K5049+1#14912#14911
35K → 23M42200-271#14911#15182
23M → 24M39186-147#15182#15329
24M → 40K57103-46#15329#15375
40K → 25.2M1897-79#15375#15454
25.2M → FINISH3784-47#15454#15501
TOTALS1588*1833-595

* 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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing