Boston Marathon logo
BOSTON MARATHON 2023

Eric London

Bib: 593•M

OK

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 15%
Gender (Male)
#0 / 15176
Top 25%
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
21:23
Rank: #5410
Start → 5K
21:23 | 6:53/mi
10K· 6.21 mi
42:15
Rank: #4949 (+461)
5K → 10K
20:52 | 6:43/mi
15K· 9.32 mi
1:03:08
Rank: #4732 (+217)
10K → 15K
20:53 | 6:43/mi
20K· 12.43 mi
1:24:25
Rank: #4762 (-30)
15K → 20K
21:17 | 6:51/mi
Half· 13.11 mi
1:28:58
Rank: #4721 (+41)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:45:34
Rank: #4656 (+65)
Half → 25K
16:36 | 6:51/mi
30K· 18.64 mi
2:07:31
Rank: #4675 (-19)
25K → 30K
21:57 | 7:04/mi
20M
2:17:04
Rank: #4609 (+66)
30K → 20M
9:33 | 7:02/mi
21M
2:24:15
Rank: #4487 (+122)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:29:26
Rank: #4499 (-12)
21M → 35K
5:11 | 6:56/mi
23M
2:38:15
Rank: #4453 (+46)
35K → 23M
8:49 | 7:03/mi
24M
2:45:17
Rank: #4465 (-12)
23M → 24M
7:02 | 7:02/mi
40K· 24.85 mi
2:51:02
Rank: #4357 (+108)
24M → 40K
5:45 | 6:44/mi
25.2M
2:53:24
Rank: #4279 (+78)
40K → 25.2M
2:22 | 6:52/mi
Finish· 26.22 mi
2:59:41
Rank: #4104 (+175)
25.2M → Finish
6:17 | 6:10/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 HalfFaster
Distance13.11 mi
Time1:28:58
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:30:43
Pace6:55 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:5221:236:5321:23
6:53
-
10K
6.21 mi11:07:4442:156:4820:52
6:43
-0:10
15K
9.32 mi11:28:371:03:086:4620:53
6:43
0:00
20K
12.43 mi11:49:541:24:256:4821:17
6:51
+0:08
Half
13.11 mi11:54:271:28:586:474:33
6:40
-0:11
25K
15.53 mi12:11:031:45:346:4816:36
6:51
+0:11
30K
18.64 mi12:33:002:07:316:5021:57
7:04
+0:13
20M
20.00 mi12:42:332:17:046:519:33
7:02
-0:02
21M
21.00 mi12:49:442:24:156:527:11
7:11
+0:09
35K
21.75 mi12:54:552:29:266:525:11
6:56
-0:15
23M
23.00 mi13:03:442:38:156:538:49
7:03
+0:07
24M
24.00 mi13:10:462:45:176:537:02
7:02
-0:01
40K
24.85 mi13:16:312:51:026:535:45
6:44
-0:18
25.2M
25.20 mi13:18:532:53:246:532:22
6:52
+0:08
Finish
26.22 mi13:25:102:59:416:516:17
6:10
-0:42

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

6:51 /mi

Slowest Pace

7:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

58:20

32% of race

Time at Steady Pace

2:01:21

68% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:51 /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 mi10:46:5221:236:5321:23
6:53
#5410
10K
6.21 mi11:07:4442:156:4820:52
6:43
#4949
15K
9.32 mi11:28:371:03:086:4620:53
6:43
#4732
20K
12.43 mi11:49:541:24:256:4821:17
6:51
#4762
Half
13.11 mi11:54:271:28:586:474:33
6:40
#4721
25K
15.53 mi12:11:031:45:346:4816:36
6:51
#4656
30K
18.64 mi12:33:002:07:316:5021:57
7:04
#4675
20M
20.00 mi12:42:332:17:046:519:33
7:02
#4609
21M
21.00 mi12:49:442:24:156:527:11
7:11
#4487
35K
21.75 mi12:54:552:29:266:525:11
6:56
#4499
23M
23.00 mi13:03:442:38:156:538:49
7:03
#4453
24M
24.00 mi13:10:462:45:176:537:02
7:02
#4465
40K
24.85 mi13:16:312:51:026:535:45
6:44
#4357
25.2M
25.20 mi13:18:532:53:246:532:22
6:52
#4279
Finish
26.22 mi13:25:102:59:416:516:17
6:10
#4104
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5410499549954338(Top 16%)4063(Top 27%)4063(Top 77%)
10K6.21 mi3.10 mi4949+4614591+4044591+4044497(Top 17%)4202(Top 28%)4202(Top 80%)
15K9.32 mi3.11 mi4732+2174405+1864405+1864338(Top 16%)4063(Top 27%)4063(Top 77%)
20K12.43 mi3.11 mi4762-304441-364441-364903(Top 18%)4552(Top 30%)4552(Top 86%)
Half13.11 mi0.68 mi4721+414400+414400+414045(Top 15%)3797(Top 25%)3797(Top 72%)
25K15.53 mi2.42 mi4656+654336+644336+644538(Top 17%)4225(Top 28%)4225(Top 80%)
30K18.64 mi3.11 mi4675-194359-234359-234741(Top 18%)4375(Top 29%)4375(Top 83%)
20M20.00 mi1.36 mi4609+664297+624297+624188(Top 16%)3867(Top 25%)3867(Top 73%)
21M21.00 mi1.00 mi4487+1224188+1094188+1093022(Top 11%)2833(Top 19%)2833(Top 54%)
35K21.75 mi0.75 mi4499-124195-74195-74900(Top 18%)4406(Top 29%)4406(Top 83%)
23M23.00 mi1.25 mi4453+464153+424153+423986(Top 15%)3667(Top 24%)3667(Top 69%)
24M24.00 mi1.00 mi4465-124167-144167-144824(Top 18%)4293(Top 28%)4293(Top 81%)
40K24.85 mi0.85 mi4357+1084069+984069+982493(Top 9%)2313(Top 15%)2313(Top 44%)
25.2M25.20 mi0.35 mi4279+783996+733996+731374(Top 5%)1304(Top 9%)1304(Top 25%)
Finish26.22 mi1.02 mi4104+1753839+1573839+1571187(Top 4%)1131(Top 7%)1131(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4338

Males

4063

M18-39

4063

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4497

Males

4202

M18-39

4202

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4338

Males

4063

M18-39

4063

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4903

Males

4552

M18-39

4552

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4045

Males

3797

M18-39

3797

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4538

Males

4225

M18-39

4225

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4741

Males

4375

M18-39

4375

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4188

Males

3867

M18-39

3867

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3022

Males

2833

M18-39

2833

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4900

Males

4406

M18-39

4406

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

3986

Males

3667

M18-39

3667

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4824

Males

4293

M18-39

4293

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2493

Males

2313

M18-39

2313

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1374

Males

1304

M18-39

1304

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1187

Males

1131

M18-39

1131

Passing Analysis

Category:
Athletes Passed
1925
Passed By
619
Net Change
+1306
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5410
5K → 10K50645+461#5410#4949
10K → 15K25235+217#4949#4732
15K → 20K87117-30#4732#4762
20K → Half5110+41#4762#4721
Half → 25K13671+65#4721#4656
25K → 30K119138-19#4656#4675
30K → 20M9630+66#4675#4609
20M → 21M13412+122#4609#4487
21M → 35K3850-12#4487#4499
35K → 23M10155+46#4499#4453
23M → 24M3547-12#4453#4465
24M → 40K1157+108#4465#4357
40K → 25.2M791+78#4357#4279
25.2M → Finish1761+175#4279#4104
TOTALS1925619+1306
📊

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