Boston Marathon logo
BOSTON MARATHON 2023

Zak Round

Bib: 7317•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 13%
Division (M18-39)
#0 / 5285
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:53
Rank: #3842
Start → 5K
20:53 | 6:43/mi
10K· 6.21 mi
41:28
Rank: #3712 (+130)
5K → 10K
20:35 | 6:38/mi
15K· 9.32 mi
1:01:55
Rank: #3494 (+218)
10K → 15K
20:27 | 6:35/mi
20K· 12.43 mi
1:22:12
Rank: #3167 (+327)
15K → 20K
20:17 | 6:32/mi
Half· 13.11 mi
1:26:36
Rank: #3125 (+42)
20K → Half
4:24 | 6:27/mi
25K· 15.53 mi
1:42:24
Rank: #2925 (+200)
Half → 25K
15:48 | 6:31/mi
30K· 18.64 mi
2:02:53
Rank: #2703 (+222)
25K → 30K
20:29 | 6:36/mi
20M
2:11:47
Rank: #2591 (+112)
30K → 20M
8:54 | 6:33/mi
21M
2:18:38
Rank: #2496 (+95)
20M → 21M
6:51 | 6:51/mi
35K· 21.75 mi
2:23:15
Rank: #2412 (+84)
21M → 35K
4:37 | 6:10/mi
23M
2:31:20
Rank: #2316 (+96)
35K → 23M
8:05 | 6:27/mi
24M
2:37:31
Rank: #2227 (+89)
23M → 24M
6:11 | 6:11/mi
40K· 24.85 mi
2:43:00
Rank: #2168 (+59)
24M → 40K
5:29 | 6:25/mi
25.2M
2:45:24
Rank: #2147 (+21)
40K → 25.2M
2:24 | 6:58/mi
Finish· 26.22 mi
2:51:45
Rank: #2064 (+83)
25.2M → Finish
6:21 | 6:14/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via Half
Distance13.11 mi
Time1:26:36
Pace6:36 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:25:09
Pace6:30 /mi
📊Negative Split: 1.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:0420:536:4320:53
6:43
-
10K
6.21 mi10:45:3941:286:4020:35
6:38
-0:05
15K
9.32 mi11:06:061:01:556:3920:27
6:35
-0:03
20K
12.43 mi11:26:231:22:126:3720:17
6:32
-0:03
Half
13.11 mi11:30:471:26:366:364:24
6:27
-0:05
25K
15.53 mi11:46:351:42:246:3615:48
6:31
+0:04
30K
18.64 mi12:07:042:02:536:3620:29
6:36
+0:05
20M
20.00 mi12:15:582:11:476:358:54
6:33
-0:03
21M
21.00 mi12:22:492:18:386:366:51
6:51
+0:18
35K
21.75 mi12:27:262:23:156:354:37
6:10
-0:41
23M
23.00 mi12:35:312:31:206:358:05
6:27
+0:17
24M
24.00 mi12:41:422:37:316:346:11
6:11
-0:16
40K
24.85 mi12:47:112:43:006:335:29
6:25
+0:14
25.2M
25.20 mi12:49:352:45:246:342:24
6:58
+0:33
Finish
26.22 mi12:55:562:51:456:336:21
6:14
-0:44

Checkpoints & Pacing

📈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

6:10 /mi

Average Pace

6:33 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:30

95% of race

Time at Steady Pace

9:15

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:33 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:25:0420:536:4320:53
6:43
#3842
10K
6.21 mi10:45:3941:286:4020:35
6:38
#3712
15K
9.32 mi11:06:061:01:556:3920:27
6:35
#3494
20K
12.43 mi11:26:231:22:126:3720:17
6:32
#3167
Half
13.11 mi11:30:471:26:366:364:24
6:27
#3125
25K
15.53 mi11:46:351:42:246:3615:48
6:31
#2925
30K
18.64 mi12:07:042:02:536:3620:29
6:36
#2703
20M
20.00 mi12:15:582:11:476:358:54
6:33
#2591
21M
21.00 mi12:22:492:18:386:366:51
6:51
#2496
35K
21.75 mi12:27:262:23:156:354:37
6:10
#2412
23M
23.00 mi12:35:312:31:206:358:05
6:27
#2316
24M
24.00 mi12:41:422:37:316:346:11
6:11
#2227
40K
24.85 mi12:47:112:43:006:335:29
6:25
#2168
25.2M
25.20 mi12:49:352:45:246:342:24
6:58
#2147
Finish
26.22 mi12:55:562:51:456:336:21
6:14
#2064
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3842360836083141(Top 12%)2990(Top 20%)2990(Top 57%)
10K6.21 mi3.10 mi3712+1303501+1073501+1073658(Top 14%)3454(Top 23%)3454(Top 65%)
15K9.32 mi3.11 mi3494+2183307+1943307+1943141(Top 12%)2990(Top 20%)2990(Top 57%)
20K12.43 mi3.11 mi3167+3273014+2933014+2932441(Top 9%)2337(Top 15%)2337(Top 44%)
Half13.11 mi0.68 mi3125+422977+372977+372452(Top 9%)2351(Top 15%)2351(Top 44%)
25K15.53 mi2.42 mi2925+2002795+1822795+1822240(Top 8%)2148(Top 14%)2148(Top 41%)
30K18.64 mi3.11 mi2703+2222583+2122583+2121929(Top 7%)1845(Top 12%)1845(Top 35%)
20M20.00 mi1.36 mi2591+1122475+1082475+1081659(Top 6%)1583(Top 10%)1583(Top 30%)
21M21.00 mi1.00 mi2496+952389+862389+861595(Top 6%)1519(Top 10%)1519(Top 29%)
35K21.75 mi0.75 mi2412+842310+792310+791181(Top 4%)1125(Top 7%)1125(Top 21%)
23M23.00 mi1.25 mi2316+962219+912219+911301(Top 5%)1232(Top 8%)1232(Top 23%)
24M24.00 mi1.00 mi2227+892136+832136+83988(Top 4%)937(Top 6%)937(Top 18%)
40K24.85 mi0.85 mi2168+592080+562080+561256(Top 5%)1184(Top 8%)1184(Top 22%)
25.2M25.20 mi0.35 mi2147+212060+202060+201625(Top 6%)1531(Top 10%)1531(Top 29%)
Finish26.22 mi1.02 mi2064+831978+821978+821386(Top 5%)1311(Top 9%)1311(Top 25%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3141

Males

2990

M18-39

2990

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3658

Males

3454

M18-39

3454

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3141

Males

2990

M18-39

2990

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2441

Males

2337

M18-39

2337

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2452

Males

2351

M18-39

2351

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2240

Males

2148

M18-39

2148

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1929

Males

1845

M18-39

1845

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1659

Males

1583

M18-39

1583

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1595

Males

1519

M18-39

1519

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1181

Males

1125

M18-39

1125

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1301

Males

1232

M18-39

1232

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

988

Males

937

M18-39

937

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1256

Males

1184

M18-39

1184

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1625

Males

1531

M18-39

1531

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1386

Males

1311

M18-39

1311

Passing Analysis

Category:
Athletes Passed
2003
Passed By
225
Net Change
+1778
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3842
5K → 10K283153+130#3842#3712
10K → 15K24527+218#3712#3494
15K → 20K3303+327#3494#3167
20K → Half475+42#3167#3125
Half → 25K2055+200#3125#2925
25K → 30K2308+222#2925#2703
30K → 20M1142+112#2703#2591
20M → 21M1005+95#2591#2496
21M → 35K840+84#2496#2412
35K → 23M982+96#2412#2316
23M → 24M912+89#2316#2227
24M → 40K634+59#2227#2168
40K → 25.2M243+21#2168#2147
25.2M → Finish896+83#2147#2064
TOTALS2003225+1778
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing