Boston Marathon logo
BOSTON MARATHON 2023

Jon Salois

Bib: 7171•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 43%
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:50
Rank: #13956
Start → 5K
24:50 | 8:00/mi
10K· 6.21 mi
49:18
Rank: #13840 (+116)
5K → 10K
24:28 | 7:53/mi
15K· 9.32 mi
1:13:48
Rank: #13720 (+120)
10K → 15K
24:30 | 7:53/mi
20K· 12.43 mi
1:39:23
Rank: #14072 (-352)
15K → 20K
25:35 | 8:14/mi
Half· 13.11 mi
1:44:40
Rank: #13977 (+95)
20K → Half
5:17 | 7:45/mi
25K· 15.53 mi
2:03:50
Rank: #13649 (+328)
Half → 25K
19:10 | 7:54/mi
30K· 18.64 mi
2:28:37
Rank: #13080 (+569)
25K → 30K
24:47 | 7:59/mi
20M
2:39:16
Rank: #12730 (+350)
30K → 20M
10:39 | 7:50/mi
21M
2:47:16
Rank: #12368 (+362)
20M → 21M
8:00 | 8:00/mi
35K· 21.75 mi
2:53:07
Rank: #12310 (+58)
21M → 35K
5:51 | 7:49/mi
23M
3:03:00
Rank: #12096 (+214)
35K → 23M
9:53 | 7:54/mi
24M
3:10:44
Rank: #11968 (+128)
23M → 24M
7:44 | 7:44/mi
40K· 24.85 mi
3:17:27
Rank: #11830 (+138)
24M → 40K
6:43 | 7:51/mi
25.2M
3:20:13
Rank: #11737 (+93)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:27:35
Rank: #11478 (+259)
25.2M → Finish
7:22 | 7:14/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
Time1:44:40
Pace7:59 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:42:55
Pace7:51 /mi
📊Negative Split: 1.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:29:3324:508:0024:50
8:00
-
10K
6.21 mi10:54:0149:187:5624:28
7:53
-0:07
15K
9.32 mi11:18:311:13:487:5524:30
7:53
0:00
20K
12.43 mi11:44:061:39:238:0025:35
8:14
+0:21
Half
13.11 mi11:49:231:44:407:595:17
7:45
-0:29
25K
15.53 mi12:08:332:03:507:5819:10
7:54
+0:09
30K
18.64 mi12:33:202:28:377:5824:47
7:59
+0:05
20M
20.00 mi12:43:592:39:167:5810:39
7:50
-0:09
21M
21.00 mi12:51:592:47:167:588:00
8:00
+0:10
35K
21.75 mi12:57:502:53:077:585:51
7:49
-0:11
23M
23.00 mi13:07:433:03:007:579:53
7:54
+0:05
24M
24.00 mi13:15:273:10:447:577:44
7:44
-0:10
40K
24.85 mi13:22:103:17:277:576:43
7:51
+0:07
25.2M
25.20 mi13:24:563:20:137:572:46
8:01
+0:10
Finish
26.22 mi13:32:183:27:357:557:22
7:14
-0:47

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

7:14 /mi

Average Pace

7:55 /mi

Slowest Pace

8:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:37

59% of race

Time at Steady Pace

1:25:58

41% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:55 /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 mi10:29:3324:508:0024:50
8:00
#13956
10K
6.21 mi10:54:0149:187:5624:28
7:53
#13840
15K
9.32 mi11:18:311:13:487:5524:30
7:53
#13720
20K
12.43 mi11:44:061:39:238:0025:35
8:14
#14072
Half
13.11 mi11:49:231:44:407:595:17
7:45
#13977
25K
15.53 mi12:08:332:03:507:5819:10
7:54
#13649
30K
18.64 mi12:33:202:28:377:5824:47
7:59
#13080
20M
20.00 mi12:43:592:39:167:5810:39
7:50
#12730
21M
21.00 mi12:51:592:47:167:588:00
8:00
#12368
35K
21.75 mi12:57:502:53:077:585:51
7:49
#12310
23M
23.00 mi13:07:433:03:007:579:53
7:54
#12096
24M
24.00 mi13:15:273:10:447:577:44
7:44
#11968
40K
24.85 mi13:22:103:17:277:576:43
7:51
#11830
25.2M
25.20 mi13:24:563:20:137:572:46
8:01
#11737
Finish
26.22 mi13:32:183:27:357:557:22
7:14
#11478
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi139569930993013390(Top 50%)9650(Top 64%)9650(Top 183%)
10K6.21 mi3.10 mi13840+1169877+539877+5313744(Top 52%)9836(Top 65%)9836(Top 186%)
15K9.32 mi3.11 mi13720+1209808+699808+6913390(Top 50%)9650(Top 64%)9650(Top 183%)
20K12.43 mi3.11 mi14072-3529923-1159923-11515164(Top 57%)10333(Top 68%)10333(Top 196%)
Half13.11 mi0.68 mi13977+959886+379886+3712185(Top 46%)9139(Top 60%)9139(Top 173%)
25K15.53 mi2.42 mi13649+3289731+1559731+15511944(Top 45%)8883(Top 59%)8883(Top 168%)
30K18.64 mi3.11 mi13080+5699463+2689463+26810697(Top 40%)8195(Top 54%)8195(Top 155%)
20M20.00 mi1.36 mi12730+3509296+1679296+1679147(Top 34%)7285(Top 48%)7285(Top 138%)
21M21.00 mi1.00 mi12368+3629140+1569140+1567354(Top 28%)6099(Top 40%)6099(Top 115%)
35K21.75 mi0.75 mi12310+589094+469094+4610780(Top 40%)8003(Top 53%)8003(Top 151%)
23M23.00 mi1.25 mi12096+2148969+1258969+1259030(Top 34%)6984(Top 46%)6984(Top 132%)
24M24.00 mi1.00 mi11968+1288890+798890+799296(Top 35%)7048(Top 46%)7048(Top 133%)
40K24.85 mi0.85 mi11830+1388817+738817+739034(Top 34%)6844(Top 45%)6844(Top 129%)
25.2M25.20 mi0.35 mi11737+938766+518766+516669(Top 25%)5395(Top 36%)5395(Top 102%)
Finish26.22 mi1.02 mi11478+2598623+1438623+1436629(Top 25%)5340(Top 35%)5340(Top 101%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

13390

Males

9650

M18-39

9650

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

13744

Males

9836

M18-39

9836

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

13390

Males

9650

M18-39

9650

15K→20K

9.3 - 12.4 mi

Top 57%
×5stories
+106ft-86ft

Overall

15164

Males

10333

M18-39

10333

20K→Half

12.4 - 13.1 mi

Top 46%
×2stories
+19ft-37ft

Overall

12185

Males

9139

M18-39

9139

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

11944

Males

8883

M18-39

8883

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

10697

Males

8195

M18-39

8195

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9147

Males

7285

M18-39

7285

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7354

Males

6099

M18-39

6099

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

10780

Males

8003

M18-39

8003

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9030

Males

6984

M18-39

6984

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9296

Males

7048

M18-39

7048

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9034

Males

6844

M18-39

6844

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6669

Males

5395

M18-39

5395

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

6629

Males

5340

M18-39

5340

Passing Analysis

Category:
Athletes Passed
3366
Passed By
888
Net Change
+2478
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13956
5K → 10K351235+116#13956#13840
10K → 15K243123+120#13840#13720
15K → 20K92444-352#13720#14072
20K → Half972+95#14072#13977
Half → 25K34214+328#13977#13649
25K → 30K58011+569#13649#13080
30K → 20M3511+350#13080#12730
20M → 21M3642+362#12730#12368
21M → 35K7416+58#12368#12310
35K → 23M22612+214#12310#12096
23M → 24M14315+128#12096#11968
24M → 40K1468+138#11968#11830
40K → 25.2M952+93#11830#11737
25.2M → Finish2623+259#11737#11478
TOTALS3366888+2478
📊

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