Boston Marathon logo
BOSTON MARATHON 2023

Zackary Jellis

ME

Bib: 24610 M

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

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
10:04/mi
31:18
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
10:03/mi
1:02:30
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
10:28/mi
1:35:01
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
10:40/mi
2:08:09
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
10:10/mi
2:15:05
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
11:22/mi
2:42:39
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
12:10/mi
3:20:26
↑ 181↓ 1480.2%
138 ft elev
20M
12:19/mi
3:37:10
↑ 64↓ 500.2%
148 ft elev
21M
13:33/mi
3:50:43
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
11:24/mi
3:59:15
↑ 17↓ 861.7%
156 ft elev
23M
13:08/mi
4:15:42
↑ 23↓ 630.6%
116 ft elev
24M
12:27/mi
4:28:09
↓ 821.3%
34 ft elev
40K· 24.85 mi
13:05/mi
4:39:20
↓ 200.3%
20 ft elev
25.2M
13:20/mi
4:43:56
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
11:28/mi
4:55:37
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
2:15:0510:18 /mi⚡ faster
2nd Half
2:40:3212:15 /mi+18.8%
Positive split — 18.8% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
31:1810:043.11 mi31:18
10:04
-
10K
1:02:3010:043.10 mi31:12
10:03
-0:01
15K
1:35:0110:123.11 mi32:31
10:28
+0:25
20K
2:08:0910:193.11 mi33:08
10:40
+0:12
Half(13.11 mi)
2:15:0510:180.68 mi6:56
10:10
-0:30
25K
2:42:3910:282.42 mi27:34
11:22
+1:12
30K
3:20:2610:453.11 mi37:47
12:10
+0:48
20M
3:37:1010:511.36 mi16:44
12:19
+0:09
21M
3:50:4310:591.00 mi13:33
13:33
+1:14
35K
3:59:1511:000.75 mi8:32
11:24
-2:09
23M
4:15:4211:071.25 mi16:27
13:08
+1:44
24M
4:28:0911:101.00 mi12:27
12:27
-0:41
40K
4:39:2011:140.85 mi11:11
13:05
+0:38
25.2M
4:43:5611:160.35 mi4:36
13:20
+0:15
Finish(26.22 mi)
4:55:3711:171.02 mi11:41
11:28
-1:52
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

10:03 /mi

Average Pace

11:17 /mi

Slowest Pace

13:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:15:05

46% of race

Time at Steady Pace

47:47

16% of race

Time at Slower Pace

1:52:45

38% of race

Average Pace: 11:16 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi236101388413884243981425614256
10K3.10 mi23748-13813971-8713971-87237801398613986
15K3.11 mi23991-24314085-11414085-114243981425614256
20K3.11 mi24041-5014104-1914104-19241191411914119
Half(13.11 mi)0.68 mi24004+3714084+2014084+20236001390013900
25K2.42 mi24111-10714121-3714121-37245021424914249
30K3.11 mi24260-14914162-4114162-41246721426614266
20M1.36 mi24297-3714172-1014172-10245561416514165
21M1.00 mi24329-3214184-1214184-12246351419314193
35K0.75 mi24321+814166+1814166+18239711383413834
23M1.25 mi24404-8314201-3514201-35252251444414444
24M1.00 mi24463-5914217-1614217-16250151430314303
40K0.85 mi24506-4314232-1514232-15249991430214302
25.2M0.35 mi24514-814235-314235-3243541397813978
Finish(26.22 mi)1.02 mi24544-3014236-114236-1246361414214142

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21story building
+97ft-345ft

Overall

24398

Males

14256

M18-39

14256

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

23780

Males

13986

M18-39

13986

10K→15K

6.2 - 9.3 mi

Top 92%
×3story building
+67ft-78ft

Overall

24398

Males

14256

M18-39

14256

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

24119

Males

14119

M18-39

14119

20K→Half

12.4 - 13.1 mi

Top 89%
×2story building
+19ft-37ft

Overall

23600

Males

13900

M18-39

13900

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

24502

Males

14249

M18-39

14249

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

24672

Males

14266

M18-39

14266

30K→20M

18.6 - 20.0 mi

Top 92%
×5story building
+64ft-50ft

Overall

24556

Males

14165

M18-39

14165

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

24635

Males

14193

M18-39

14193

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

23971

Males

13834

M18-39

13834

35K→23M

21.8 - 23.0 mi

Top 95%
×5story building
+23ft-63ft

Overall

25225

Males

14444

M18-39

14444

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

25015

Males

14303

M18-39

14303

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

24999

Males

14302

M18-39

14302

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

24354

Males

13978

M18-39

13978

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2story building
+22ft-21ft

Overall

24636

Males

14142

M18-39

14142

Passing Analysis

Category:
▼Net Change
0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#23610
5K → 10K
280142-138
#23610 → #23748
10K → 15K
29148-243
#23748 → #23991
15K → 20K
14595-50
#23991 → #24041
20K → Half
744+37
#24041 → #24004
Half → 25K
16659-107
#24004 → #24111
25K → 30K
21162-149
#24111 → #24260
30K → 20M
7134-37
#24260 → #24297
20M → 21M
6028-32
#24297 → #24329
21M → 35K
2230+8
#24329 → #24321
35K → 23M
9310-83
#24321 → #24404
23M → 24M
7516-59
#24404 → #24463
24M → 40K
518-43
#24463 → #24506
40K → 25.2M
157-8
#24506 → #24514
25.2M → Finish
4414-30
#24514 → #24544
TOTALS
1531597-934
#23610 → #24544

Passing Visualized

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