Boston Marathon logo
BOSTON MARATHON 2023

Kurt Ashack

Bib: 2766•M

MI

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 6%
Gender (Male)
#0 / 15176
Top 10%
Division (M18-39)
#0 / 5285
Top 24%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:35/mi
20:27
↑ 97↓ 3451.5%
10K· 6.21 mi
6:30/mi
40:38
↑ 79↓ 1380.4%
15K· 9.32 mi
6:29/mi
1:00:48
↑ 67↓ 78
20K· 12.43 mi
6:30/mi
1:20:59
↑ 106↓ 860.1%
Half· 13.11 mi
6:24/mi
1:25:21
↑ 19↓ 370.5%
25K· 15.53 mi
6:24/mi
1:40:53
↑ 66↓ 880.2%
30K· 18.64 mi
6:27/mi
2:00:55
↑ 181↓ 1480.2%
20M
6:23/mi
2:09:35
↑ 64↓ 500.2%
21M
6:39/mi
2:16:14
↑ 106↓ 241.6%
35K· 21.75 mi
6:18/mi
2:20:57
↑ 17↓ 861.7%
23M
6:29/mi
2:29:04
↑ 23↓ 630.6%
24M
6:05/mi
2:35:09
↓ 821.3%
40K· 24.85 mi
6:13/mi
2:40:28
↓ 200.3%
25.2M
6:43/mi
2:42:47
↑ 13↓ 160.2%
Finish· 26.22 mi
6:05/mi
2:48:59
↑ 22↓ 21

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
Time1:25:21
Pace6:31 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:23:38
Pace6:23 /mi
📊Negative Split: 2.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:1520:276:3520:27
6:35
-
10K
6.21 mi10:41:2640:386:3220:11
6:30
-0:05
15K
9.32 mi11:01:361:00:486:3120:10
6:29
-0:01
20K
12.43 mi11:21:471:20:596:3120:11
6:30
+0:01
Half
13.11 mi11:26:091:25:216:314:22
6:24
-0:06
25K
15.53 mi11:41:411:40:536:3015:32
6:24
0:00
30K
18.64 mi12:01:432:00:556:2920:02
6:27
+0:03
20M
20.00 mi12:10:232:09:356:298:40
6:23
-0:04
21M
21.00 mi12:17:022:16:146:296:39
6:39
+0:16
35K
21.75 mi12:21:452:20:576:294:43
6:18
-0:21
23M
23.00 mi12:29:522:29:046:298:07
6:29
+0:11
24M
24.00 mi12:35:572:35:096:286:05
6:05
-0:24
40K
24.85 mi12:41:162:40:286:275:19
6:13
+0:08
25.2M
25.20 mi12:43:352:42:476:282:19
6:43
+0:30
Finish
26.22 mi12:49:472:48:596:276:12
6:05
-0:38

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

6:05 /mi

Average Pace

6:27 /mi

Slowest Pace

6:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:40

99% of race

Time at Steady Pace

2:19

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:27 /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 mi10:21:1520:276:3520:27
6:35
#2732
10K
6.21 mi10:41:2640:386:3220:11
6:30
#2721
15K
9.32 mi11:01:361:00:486:3120:10
6:29
#2658
20K
12.43 mi11:21:471:20:596:3120:11
6:30
#2545
Half
13.11 mi11:26:091:25:216:314:22
6:24
#2518
25K
15.53 mi11:41:411:40:536:3015:32
6:24
#2385
30K
18.64 mi12:01:432:00:556:2920:02
6:27
#2152
20M
20.00 mi12:10:232:09:356:298:40
6:23
#2035
21M
21.00 mi12:17:022:16:146:296:39
6:39
#1947
35K
21.75 mi12:21:452:20:576:294:43
6:18
#1917
23M
23.00 mi12:29:522:29:046:298:07
6:29
#1853
24M
24.00 mi12:35:572:35:096:286:05
6:05
#1763
40K
24.85 mi12:41:162:40:286:275:19
6:13
#1693
25.2M
25.20 mi12:43:352:42:476:282:19
6:43
#1668
Finish
26.22 mi12:49:472:48:596:276:12
6:05
#1608
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2732260026002570(Top 10%)2465(Top 16%)2465(Top 47%)
10K6.21 mi3.10 mi2721+112596+42596+42751(Top 10%)2629(Top 17%)2629(Top 50%)
15K9.32 mi3.11 mi2658+632539+572539+572570(Top 10%)2465(Top 16%)2465(Top 47%)
20K12.43 mi3.11 mi2545+1132435+1042435+1042251(Top 8%)2156(Top 14%)2156(Top 41%)
Half13.11 mi0.68 mi2518+272412+232412+232181(Top 8%)2091(Top 14%)2091(Top 40%)
25K15.53 mi2.42 mi2385+1332286+1262286+1261738(Top 7%)1664(Top 11%)1664(Top 31%)
30K18.64 mi3.11 mi2152+2332064+2222064+2221372(Top 5%)1314(Top 9%)1314(Top 25%)
20M20.00 mi1.36 mi2035+1171950+1141950+1141083(Top 4%)1038(Top 7%)1038(Top 20%)
21M21.00 mi1.00 mi1947+881863+871863+87986(Top 4%)938(Top 6%)938(Top 18%)
35K21.75 mi0.75 mi1917+301836+271836+271587(Top 6%)1507(Top 10%)1507(Top 29%)
23M23.00 mi1.25 mi1853+641773+631773+631367(Top 5%)1296(Top 9%)1296(Top 25%)
24M24.00 mi1.00 mi1763+901687+861687+86741(Top 3%)703(Top 5%)703(Top 13%)
40K24.85 mi0.85 mi1693+701618+691618+69703(Top 3%)666(Top 4%)666(Top 13%)
25.2M25.20 mi0.35 mi1668+251593+251593+25954(Top 4%)910(Top 6%)910(Top 17%)
Finish26.22 mi1.02 mi1608+601536+571536+57940(Top 4%)898(Top 6%)898(Top 17%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21story building
+97ft-345ft

Overall

2570

Males

2465

M18-39

2465

5K→10K

3.1 - 6.2 mi

Top 10%
×5story building
+79ft-138ft

Overall

2751

Males

2629

M18-39

2629

10K→15K

6.2 - 9.3 mi

Top 10%
×3story building
+67ft-78ft

Overall

2570

Males

2465

M18-39

2465

15K→20K

9.3 - 12.4 mi

Top 8%
×5story building
+106ft-86ft

Overall

2251

Males

2156

M18-39

2156

20K→Half

12.4 - 13.1 mi

Top 8%
×2story building
+19ft-37ft

Overall

2181

Males

2091

M18-39

2091

Half→25K

13.1 - 15.5 mi

Top 7%
×4story building
+66ft-88ft

Overall

1738

Males

1664

M18-39

1664

25K→30K

15.5 - 18.6 mi

Top 5%
×9story building
+181ft-148ft

Overall

1372

Males

1314

M18-39

1314

30K→20M

18.6 - 20.0 mi

Top 4%
×5story building
+64ft-50ft

Overall

1083

Males

1038

M18-39

1038

20M→21M

20.0 - 21.0 mi

Top 4%
×8story building
+106ft-24ft

Overall

986

Males

938

M18-39

938

21M→35K

21.0 - 21.8 mi

Top 6%
×7story building
+17ft-86ft

Overall

1587

Males

1507

M18-39

1507

35K→23M

21.8 - 23.0 mi

Top 5%
×5story building
+23ft-63ft

Overall

1367

Males

1296

M18-39

1296

23M→24M

23.0 - 24.0 mi

Top 3%
×6story building
+12ft-82ft

Overall

741

Males

703

M18-39

703

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

703

Males

666

M18-39

666

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

954

Males

910

M18-39

910

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2story building
+22ft-21ft

Overall

940

Males

898

M18-39

898

Passing Analysis

Category:
Athletes Passed
1371
Passed By
247
Net Change
+1124
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2732
5K → 10K159148+11#2732#2721
10K → 15K10946+63#2721#2658
15K → 20K13118+113#2658#2545
20K → Half314+27#2545#2518
Half → 25K1385+133#2518#2385
25K → 30K2396+233#2385#2152
30K → 20M1170+117#2152#2035
20M → 21M913+88#2035#1947
21M → 35K322+30#1947#1917
35K → 23M695+64#1917#1853
23M → 24M922+90#1853#1763
24M → 40K722+70#1763#1693
40K → 25.2M261+25#1693#1668
25.2M → Finish655+60#1668#1608
TOTALS1371247+1124
📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing