Boston Marathon logo
BOSTON MARATHON 2023

Daniel Johnston

Bib: 31651•M

MA

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

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
9:01/mi
28:00
↑ 97↓ 3451.5%
10K· 6.21 mi
8:48/mi
55:20
↑ 79↓ 1380.4%
15K· 9.32 mi
8:49/mi
1:22:42
↑ 67↓ 78
20K· 12.43 mi
9:05/mi
1:50:56
↑ 106↓ 860.1%
Half· 13.11 mi
8:52/mi
1:56:59
↑ 19↓ 370.5%
25K· 15.53 mi
9:42/mi
2:20:31
↑ 66↓ 880.2%
30K· 18.64 mi
9:56/mi
2:51:23
↑ 181↓ 1480.2%
20M
11:49/mi
3:07:27
↑ 64↓ 500.2%
21M
12:40/mi
3:20:07
↑ 106↓ 241.6%
35K· 21.75 mi
10:04/mi
3:27:39
↑ 17↓ 861.7%
23M
13:01/mi
3:43:57
↑ 23↓ 630.6%
24M
10:34/mi
3:54:31
↓ 821.3%
40K· 24.85 mi
16:40/mi
4:08:46
↓ 200.3%
25.2M
12:46/mi
4:13:10
↑ 13↓ 160.2%
Finish· 26.22 mi
10:30/mi
4:23:52
↑ 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 HalfFaster
Distance13.11 mi
Time1:56:59
Pace8:55 /mi
2nd Half
Distance13.11 mi
Time2:26:53
Pace11:12 /mi
📊Positive Split: 25.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:0528:009:0128:00
9:01
-
10K
6.21 mi12:16:2555:208:5427:20
8:48
-0:13
15K
9.32 mi12:43:471:22:428:5227:22
8:49
+0:01
20K
12.43 mi13:12:011:50:568:5628:14
9:05
+0:16
Half
13.11 mi13:18:041:56:598:556:03
8:52
-0:13
25K
15.53 mi13:41:362:20:319:0323:32
9:42
+0:50
30K
18.64 mi14:12:282:51:239:1230:52
9:56
+0:14
20M
20.00 mi14:28:323:07:279:2216:04
11:49
+1:53
21M
21.00 mi14:41:123:20:079:3212:40
12:40
+0:51
35K
21.75 mi14:48:443:27:399:337:32
10:04
-2:36
23M
23.00 mi15:05:023:43:579:4416:18
13:01
+2:57
24M
24.00 mi15:15:363:54:319:4610:34
10:34
-2:27
40K
24.85 mi15:29:514:08:4610:0114:15
16:40
+6:06
25.2M
25.20 mi15:34:154:13:1010:034:24
12:46
-3:54
Finish
26.22 mi15:44:574:23:5210:0410:42
10:30
-2:16

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

8:48 /mi

Average Pace

10:04 /mi

Slowest Pace

16:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:00:45

23% of race

Time at Steady Pace

2:19:26

53% of race

Time at Slower Pace

1:03:41

24% of race

Average Pace: 10:04 /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 mi11:49:0528:009:0128:00
9:01
#20498
10K
6.21 mi12:16:2555:208:5427:20
8:48
#20226
15K
9.32 mi12:43:471:22:428:5227:22
8:49
#19989
20K
12.43 mi13:12:011:50:568:5628:14
9:05
#19994
Half
13.11 mi13:18:041:56:598:556:03
8:52
#19991
25K
15.53 mi13:41:362:20:319:0323:32
9:42
#20342
30K
18.64 mi14:12:282:51:239:1230:52
9:56
#20431
20M
20.00 mi14:28:323:07:279:2216:04
11:49
#20870
21M
21.00 mi14:41:123:20:079:3212:40
12:40
#21130
35K
21.75 mi14:48:443:27:399:337:32
10:04
#21127
23M
23.00 mi15:05:023:43:579:4416:18
13:01
#21566
24M
24.00 mi15:15:363:54:319:4610:34
10:34
#21592
40K
24.85 mi15:29:514:08:4610:0114:15
16:40
#22127
25.2M
25.20 mi15:34:154:13:1010:034:24
12:46
#22162
Finish
26.22 mi15:44:574:23:5210:0410:42
10:30
#22195
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20498123631236319563(Top 73%)12126(Top 80%)12126(Top 229%)
10K6.21 mi3.10 mi20226+27212322+4112322+4119912(Top 75%)12248(Top 81%)12248(Top 232%)
15K9.32 mi3.11 mi19989+23712237+8512237+8519563(Top 73%)12126(Top 80%)12126(Top 229%)
20K12.43 mi3.11 mi19994-512253-1612253-1620081(Top 75%)12349(Top 81%)12349(Top 234%)
Half13.11 mi0.68 mi19991+312252+112252+119839(Top 75%)12252(Top 81%)12252(Top 232%)
25K15.53 mi2.42 mi20342-35112422-17012422-17021473(Top 81%)12910(Top 85%)12910(Top 244%)
30K18.64 mi3.11 mi20431-8912438-1612438-1620833(Top 78%)12564(Top 83%)12564(Top 238%)
20M20.00 mi1.36 mi20870-43912631-19312631-19323974(Top 90%)13884(Top 91%)13884(Top 263%)
21M21.00 mi1.00 mi21130-26012719-8812719-8823663(Top 89%)13740(Top 91%)13740(Top 260%)
35K21.75 mi0.75 mi21127+312712+712712+721477(Top 81%)12704(Top 84%)12704(Top 240%)
23M23.00 mi1.25 mi21566-43912906-19412906-19425096(Top 94%)14390(Top 95%)14390(Top 272%)
24M24.00 mi1.00 mi21592-2612904+212904+222167(Top 83%)12952(Top 85%)12952(Top 245%)
40K24.85 mi0.85 mi22127-53513146-24213146-24226501(Top 100%)15099(Top 99%)15099(Top 286%)
25.2M25.20 mi0.35 mi22162-3513157-1113157-1123642(Top 89%)13612(Top 90%)13612(Top 258%)
Finish26.22 mi1.02 mi22195-3313167-1013167-1022986(Top 86%)13326(Top 88%)13326(Top 252%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

19563

Males

12126

M18-39

12126

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

19912

Males

12248

M18-39

12248

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

19563

Males

12126

M18-39

12126

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

20081

Males

12349

M18-39

12349

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

19839

Males

12252

M18-39

12252

Half→25K

13.1 - 15.5 mi

Top 81%
×4story building
+66ft-88ft

Overall

21473

Males

12910

M18-39

12910

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

20833

Males

12564

M18-39

12564

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

23974

Males

13884

M18-39

13884

20M→21M

20.0 - 21.0 mi

Top 89%
×8story building
+106ft-24ft

Overall

23663

Males

13740

M18-39

13740

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

21477

Males

12704

M18-39

12704

35K→23M

21.8 - 23.0 mi

Top 94%
×5story building
+23ft-63ft

Overall

25096

Males

14390

M18-39

14390

23M→24M

23.0 - 24.0 mi

Top 83%
×6story building
+12ft-82ft

Overall

22167

Males

12952

M18-39

12952

24M→40K

24.0 - 24.9 mi

Top 100%
×1story
+6ft-20ft

Overall

26501

Males

15099

M18-39

15099

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

23642

Males

13612

M18-39

13612

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2story building
+22ft-21ft

Overall

22986

Males

13326

M18-39

13326

Passing Analysis

Category:
Athletes Passed
1323
Passed By
3020
Net Change
-1697
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20498
5K → 10K477205+272#20498#20226
10K → 15K33396+237#20226#19989
15K → 20K174179-5#19989#19994
20K → Half3431+3#19994#19991
Half → 25K46397-351#19991#20342
25K → 30K122211-89#20342#20431
30K → 20M12451-439#20431#20870
20M → 21M10270-260#20870#21130
21M → 35K4138+3#21130#21127
35K → 23M9448-439#21127#21566
23M → 24M3561-26#21566#21592
24M → 40K0535-535#21592#22127
40K → 25.2M944-35#22127#22162
25.2M → Finish2154-33#22162#22195
TOTALS13233020-1697
📊

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