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BOSTON MARATHON 2026

Alan Krock

Bib: 4452•M

PA

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 9%
Gender (Male)
#0 / 16340
Top 16%
Age Group (M18-39)
#0 / 5723
Top 37%
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
20:57
3.11 mi
Rank: #6288
Start → 5K
20:57 | 6:45/mi
10K
41:22
6.21 mi
Rank: #5467 (+821)
5K → 10K
20:25 | 6:35/mi
15K
1:01:34
9.32 mi
Rank: #4989 (+478)
10K → 15K
20:12 | 6:31/mi
20K
1:21:54
12.43 mi
Rank: #4721 (+268)
15K → 20K
20:20 | 6:33/mi
HALF
1:26:17
13.11 mi
Rank: #4672 (+49)
20K → HALF
4:23 | 6:26/mi
25K
1:42:00
15.53 mi
Rank: #4416 (+256)
HALF → 25K
15:43 | 6:29/mi
30K
2:02:13
18.64 mi
Rank: #4022 (+394)
25K → 30K
20:13 | 6:31/mi
20M
2:10:39
20.00 mi
Rank: #3690 (+332)
30K → 20M
8:26 | 6:13/mi
21M
2:17:12
21.00 mi
Rank: #3516 (+174)
20M → 21M
6:33 | 6:33/mi
35K
2:21:39
21.75 mi
Rank: #3393 (+123)
21M → 35K
4:27 | 5:57/mi
23M
2:29:29
23.00 mi
Rank: #3216 (+177)
35K → 23M
7:50 | 6:16/mi
24M
2:35:25
24.00 mi
Rank: #3032 (+184)
23M → 24M
5:56 | 5:56/mi
40K
2:40:42
24.85 mi
Rank: #2926 (+106)
24M → 40K
5:17 | 6:11/mi
25.2M
2:42:57
25.20 mi
Rank: #2874 (+52)
40K → 25.2M
2:15 | 6:32/mi
FINISH
2:48:41
26.22 mi
Rank: #2701 (+173)
25.2M → FINISH
5:44 | 5:38/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via HALF
Distance13.11 mi
Time1:26:17
Pace6:35 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:22:24
Pace6:18 /mi
📊Negative Split: 4.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0120:576:4520:57
6:45
-
10K
6.21 mi10:44:2641:226:4020:25
6:35
-0:10
15K
9.32 mi11:04:381:01:346:3720:12
6:31
-0:04
20K
12.43 mi11:24:581:21:546:3620:20
6:33
+0:02
HALF
13.11 mi11:29:211:26:176:354:23
6:26
-0:07
25K
15.53 mi11:45:041:42:006:3415:43
6:29
+0:03
30K
18.64 mi12:05:172:02:136:3420:13
6:31
+0:02
20M
20.00 mi12:13:432:10:396:328:26
6:13
-0:18
21M
21.00 mi12:20:162:17:126:336:33
6:33
+0:20
35K
21.75 mi12:24:432:21:396:314:27
5:57
-0:36
23M
23.00 mi12:32:332:29:296:307:50
6:16
+0:19
24M
24.00 mi12:38:292:35:256:295:56
5:56
-0:20
40K
24.85 mi12:43:462:40:426:285:17
6:11
+0:15
25.2M
25.20 mi12:46:012:42:576:282:15
6:32
+0:21
FINISH
26.22 mi12:51:452:48:416:275:44
5:38
-0:54

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

5:38 /mi

Average Pace

6:26 /mi

Slowest Pace

6:45 /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

21:24

13% of race

Time at Steady Pace

2:06:20

75% of race

Time at Slower Pace

20:57

12% of race

Average Pace: 6:26 /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 mi10:24:0120:576:4520:57
6:45
#6288
10K
6.21 mi10:44:2641:226:4020:25
6:35
#5467
15K
9.32 mi11:04:381:01:346:3720:12
6:31
#4989
20K
12.43 mi11:24:581:21:546:3620:20
6:33
#4721
HALF
13.11 mi11:29:211:26:176:354:23
6:26
#4672
25K
15.53 mi11:45:041:42:006:3415:43
6:29
#4416
30K
18.64 mi12:05:172:02:136:3420:13
6:31
#4022
20M
20.00 mi12:13:432:10:396:328:26
6:13
#3690
21M
21.00 mi12:20:162:17:126:336:33
6:33
#3516
35K
21.75 mi12:24:432:21:396:314:27
5:57
#3393
23M
23.00 mi12:32:332:29:296:307:50
6:16
#3216
24M
24.00 mi12:38:292:35:256:295:56
5:56
#3032
40K
24.85 mi12:43:462:40:426:285:17
6:11
#2926
25.2M
25.20 mi12:46:012:42:576:282:15
6:32
#2874
FINISH
26.22 mi12:51:452:48:416:275:44
5:38
#2701
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 mi6288568956894232(Top 15%)3998(Top 24%)3998(Top 70%)
10K6.21 mi3.10 mi5467+8215064+6255064+6254774(Top 16%)4474(Top 27%)4474(Top 78%)
15K9.32 mi3.11 mi4989+4784663+4014663+4014232(Top 15%)3998(Top 24%)3998(Top 70%)
20K12.43 mi3.11 mi4721+2684430+2334430+2334061(Top 14%)3840(Top 24%)3840(Top 67%)
HALF13.11 mi0.68 mi4672+494385+454385+453841(Top 13%)3639(Top 22%)3639(Top 64%)
25K15.53 mi2.42 mi4416+2564156+2294156+2293323(Top 11%)3168(Top 19%)3168(Top 55%)
30K18.64 mi3.11 mi4022+3943799+3573799+3572588(Top 9%)2476(Top 15%)2476(Top 43%)
20M20.00 mi1.36 mi3690+3323508+2913508+2911201(Top 4%)1155(Top 7%)1155(Top 20%)
21M21.00 mi1.00 mi3516+1743346+1623346+1621435(Top 5%)1372(Top 8%)1372(Top 24%)
35K21.75 mi0.75 mi3393+1233232+1143232+1141028(Top 4%)989(Top 6%)989(Top 17%)
23M23.00 mi1.25 mi3216+1773071+1613071+1611391(Top 5%)1331(Top 8%)1331(Top 23%)
24M24.00 mi1.00 mi3032+1842897+1742897+174879(Top 3%)840(Top 5%)840(Top 15%)
40K24.85 mi0.85 mi2926+1062799+982799+981275(Top 4%)1212(Top 7%)1212(Top 21%)
25.2M25.20 mi0.35 mi2874+522746+532746+53963(Top 3%)920(Top 6%)920(Top 16%)
FINISH26.22 mi1.02 mi2701+1732589+1572589+157564(Top 2%)543(Top 3%)543(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21
+97ft-345ft

Overall

4232

Males

3998

M18-39

3998

5K→10K

3.1 - 6.2 mi

Top 16%
×5
+79ft-138ft

Overall

4774

Males

4474

M18-39

4474

10K→15K

6.2 - 9.3 mi

Top 15%
×3
+67ft-78ft

Overall

4232

Males

3998

M18-39

3998

15K→20K

9.3 - 12.4 mi

Top 14%
×5
+106ft-86ft

Overall

4061

Males

3840

M18-39

3840

20K→HALF

12.4 - 13.1 mi

Top 13%
×2
+19ft-37ft

Overall

3841

Males

3639

M18-39

3639

HALF→25K

13.1 - 15.5 mi

Top 11%
×4
+66ft-88ft

Overall

3323

Males

3168

M18-39

3168

25K→30K

15.5 - 18.6 mi

Top 9%
×9
+181ft-148ft

Overall

2588

Males

2476

M18-39

2476

30K→20M

18.6 - 20.0 mi

Top 4%
×5
+64ft-50ft

Overall

1201

Males

1155

M18-39

1155

20M→21M

20.0 - 21.0 mi

Top 5%
×8
+106ft-24ft

Overall

1435

Males

1372

M18-39

1372

21M→35K

21.0 - 21.8 mi

Top 4%
×7
+17ft-86ft

Overall

1028

Males

989

M18-39

989

35K→23M

21.8 - 23.0 mi

Top 5%
×5
+23ft-63ft

Overall

1391

Males

1331

M18-39

1331

23M→24M

23.0 - 24.0 mi

Top 3%
×6
+12ft-82ft

Overall

879

Males

840

M18-39

840

24M→40K

24.0 - 24.9 mi

Top 4%
×1
+6ft-20ft

Overall

1275

Males

1212

M18-39

1212

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1
+13ft-16ft

Overall

963

Males

920

M18-39

920

25.2M→FINISH

25.2 - 26.2 mi

Top 2%
×2
+22ft-21ft

Overall

564

Males

543

M18-39

543

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3640*
Passed By
53
Net Change
+3587
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6288
5K → 10K835*14+821#6288#5467
10K → 15K487*9+478#5467#4989
15K → 20K277*9+268#4989#4721
20K → HALF534+49#4721#4672
HALF → 25K260*4+256#4672#4416
25K → 30K395*1+394#4416#4022
30K → 20M332*0+332#4022#3690
20M → 21M1751+174#3690#3516
21M → 35K1230+123#3516#3393
35K → 23M1814+177#3393#3216
23M → 24M1851+184#3216#3032
24M → 40K1093+106#3032#2926
40K → 25.2M542+52#2926#2874
25.2M → FINISH1741+173#2874#2701
TOTALS3640*53+3587

* 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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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing