Boston Marathon logo
BOSTON MARATHON 2023

Andrew Epstein

Bib: 2659•M

WA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 7%
Gender (Male)
#0 / 15176
Top 11%
Division (M18-39)
#0 / 5285
Top 26%
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
6:12/mi
19:16
↑ 97↓ 3451.5%
10K· 6.21 mi
6:13/mi
38:34
↑ 79↓ 1380.4%
15K· 9.32 mi
6:11/mi
57:48
↑ 67↓ 78
20K· 12.43 mi
6:18/mi
1:17:23
↑ 106↓ 860.1%
Half· 13.11 mi
6:11/mi
1:21:36
↑ 19↓ 370.5%
25K· 15.53 mi
6:27/mi
1:37:15
↑ 66↓ 880.2%
30K· 18.64 mi
6:34/mi
1:57:38
↑ 181↓ 1480.2%
20M
6:42/mi
2:06:44
↑ 64↓ 500.2%
21M
7:19/mi
2:14:03
↑ 106↓ 241.6%
35K· 21.75 mi
6:45/mi
2:19:06
↑ 17↓ 861.7%
23M
6:58/mi
2:27:49
↑ 23↓ 630.6%
24M
6:44/mi
2:34:33
↓ 821.3%
40K· 24.85 mi
6:56/mi
2:40:29
↓ 200.3%
25.2M
7:21/mi
2:43:01
↑ 13↓ 160.2%
Finish· 26.22 mi
6:41/mi
2:49:50
↑ 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
Time1:21:36
Pace6:13 /mi
2nd Half
Distance13.11 mi
Time1:28:14
Pace6:44 /mi
📊Positive Split: 8.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:1719:166:1219:16
6:12
-
10K
6.21 mi10:39:3538:346:1219:18
6:13
+0:01
15K
9.32 mi10:58:4957:486:1219:14
6:11
-0:02
20K
12.43 mi11:18:241:17:236:1419:35
6:18
+0:07
Half
13.11 mi11:22:371:21:366:134:13
6:11
-0:07
25K
15.53 mi11:38:161:37:156:1615:39
6:27
+0:16
30K
18.64 mi11:58:391:57:386:1920:23
6:34
+0:07
20M
20.00 mi12:07:452:06:446:209:06
6:42
+0:08
21M
21.00 mi12:15:042:14:036:237:19
7:19
+0:37
35K
21.75 mi12:20:072:19:066:245:03
6:45
-0:34
23M
23.00 mi12:28:502:27:496:268:43
6:58
+0:13
24M
24.00 mi12:35:342:34:336:266:44
6:44
-0:14
40K
24.85 mi12:41:302:40:296:275:56
6:56
+0:12
25.2M
25.20 mi12:44:022:43:016:282:32
7:21
+0:25
Finish
26.22 mi12:50:512:49:506:296:49
6:41
-0:40

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

6:11 /mi

Average Pace

6:29 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:20

86% of race

Time at Steady Pace

14:39

9% of race

Time at Slower Pace

9:51

6% of race

Average Pace: 6:29 /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 mi10:20:1719:166:1219:16
6:12
#1136
10K
6.21 mi10:39:3538:346:1219:18
6:13
#1222
15K
9.32 mi10:58:4957:486:1219:14
6:11
#1200
20K
12.43 mi11:18:241:17:236:1419:35
6:18
#1226
Half
13.11 mi11:22:371:21:366:134:13
6:11
#1230
25K
15.53 mi11:38:161:37:156:1615:39
6:27
#1315
30K
18.64 mi11:58:391:57:386:1920:23
6:34
#1377
20M
20.00 mi12:07:452:06:446:209:06
6:42
#1427
21M
21.00 mi12:15:042:14:036:237:19
7:19
#1509
35K
21.75 mi12:20:072:19:066:245:03
6:45
#1565
23M
23.00 mi12:28:502:27:496:268:43
6:58
#1627
24M
24.00 mi12:35:342:34:336:266:44
6:44
#1664
40K
24.85 mi12:41:302:40:296:275:56
6:56
#1696
25.2M
25.20 mi12:44:022:43:016:282:32
7:21
#1705
Finish
26.22 mi12:50:512:49:506:296:49
6:41
#1752
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1136107410741214(Top 5%)1157(Top 8%)1157(Top 22%)
10K6.21 mi3.10 mi1222-861158-841158-841404(Top 5%)1339(Top 9%)1339(Top 25%)
15K9.32 mi3.11 mi1200+221138+201138+201214(Top 5%)1157(Top 8%)1157(Top 22%)
20K12.43 mi3.11 mi1226-261168-301168-301400(Top 5%)1338(Top 9%)1338(Top 25%)
Half13.11 mi0.68 mi1230-41172-41172-41312(Top 5%)1260(Top 8%)1260(Top 24%)
25K15.53 mi2.42 mi1315-851255-831255-831965(Top 7%)1881(Top 12%)1881(Top 36%)
30K18.64 mi3.11 mi1377-621315-601315-601803(Top 7%)1726(Top 11%)1726(Top 33%)
20M20.00 mi1.36 mi1427-501364-491364-492239(Top 8%)2128(Top 14%)2128(Top 40%)
21M21.00 mi1.00 mi1509-821442-781442-783650(Top 14%)3381(Top 22%)3381(Top 64%)
35K21.75 mi0.75 mi1565-561496-541496-543802(Top 14%)3496(Top 23%)3496(Top 66%)
23M23.00 mi1.25 mi1627-621557-611557-613547(Top 13%)3286(Top 22%)3286(Top 62%)
24M24.00 mi1.00 mi1664-371591-341591-343250(Top 12%)3005(Top 20%)3005(Top 57%)
40K24.85 mi0.85 mi1696-321621-301621-303494(Top 13%)3173(Top 21%)3173(Top 60%)
25.2M25.20 mi0.35 mi1705-91630-91630-93081(Top 12%)2804(Top 18%)2804(Top 53%)
Finish26.22 mi1.02 mi1752-471673-431673-433418(Top 13%)3060(Top 20%)3060(Top 58%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21story building
+97ft-345ft

Overall

1214

Males

1157

M18-39

1157

5K→10K

3.1 - 6.2 mi

Top 5%
×5story building
+79ft-138ft

Overall

1404

Males

1339

M18-39

1339

10K→15K

6.2 - 9.3 mi

Top 5%
×3story building
+67ft-78ft

Overall

1214

Males

1157

M18-39

1157

15K→20K

9.3 - 12.4 mi

Top 5%
×5story building
+106ft-86ft

Overall

1400

Males

1338

M18-39

1338

20K→Half

12.4 - 13.1 mi

Top 5%
×2story building
+19ft-37ft

Overall

1312

Males

1260

M18-39

1260

Half→25K

13.1 - 15.5 mi

Top 7%
×4story building
+66ft-88ft

Overall

1965

Males

1881

M18-39

1881

25K→30K

15.5 - 18.6 mi

Top 7%
×9story building
+181ft-148ft

Overall

1803

Males

1726

M18-39

1726

30K→20M

18.6 - 20.0 mi

Top 8%
×5story building
+64ft-50ft

Overall

2239

Males

2128

M18-39

2128

20M→21M

20.0 - 21.0 mi

Top 14%
×8story building
+106ft-24ft

Overall

3650

Males

3381

M18-39

3381

21M→35K

21.0 - 21.8 mi

Top 14%
×7story building
+17ft-86ft

Overall

3802

Males

3496

M18-39

3496

35K→23M

21.8 - 23.0 mi

Top 13%
×5story building
+23ft-63ft

Overall

3547

Males

3286

M18-39

3286

23M→24M

23.0 - 24.0 mi

Top 12%
×6story building
+12ft-82ft

Overall

3250

Males

3005

M18-39

3005

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3494

Males

3173

M18-39

3173

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3081

Males

2804

M18-39

2804

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2story building
+22ft-21ft

Overall

3418

Males

3060

M18-39

3060

Passing Analysis

Category:
Athletes Passed
232
Passed By
848
Net Change
-616
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1136
5K → 10K28114-86#1136#1222
10K → 15K4725+22#1222#1200
15K → 20K2854-26#1200#1226
20K → Half59-4#1226#1230
Half → 25K1095-85#1230#1315
25K → 30K2688-62#1315#1377
30K → 20M959-50#1377#1427
20M → 21M890-82#1427#1509
21M → 35K359-56#1509#1565
35K → 23M971-62#1565#1627
23M → 24M1552-37#1627#1664
24M → 40K1951-32#1664#1696
40K → 25.2M1120-9#1696#1705
25.2M → Finish1461-47#1705#1752
TOTALS232848-616
📊

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