Boston Marathon logo
BOSTON MARATHON 2023

Nicholas Gregory

Bib: 8611•M

NH

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 14%
Division (M18-39)
#0 / 5285
Top 31%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:59
Rank: #1947
Start → 5K
19:59 | 6:26/mi
10K· 6.21 mi
39:47
Rank: #1993 (-46)
5K → 10K
19:48 | 6:22/mi
15K· 9.32 mi
59:41
Rank: #2018 (-25)
10K → 15K
19:54 | 6:24/mi
20K· 12.43 mi
1:19:41
Rank: #1999 (+19)
15K → 20K
20:00 | 6:26/mi
Half· 13.11 mi
1:24:06
Rank: #2016 (-17)
20K → Half
4:25 | 6:28/mi
25K· 15.53 mi
1:39:51
Rank: #2041 (-25)
Half → 25K
15:45 | 6:30/mi
30K· 18.64 mi
2:00:45
Rank: #2102 (-61)
25K → 30K
20:54 | 6:44/mi
20M
2:10:01
Rank: #2144 (-42)
30K → 20M
9:16 | 6:49/mi
21M
2:17:18
Rank: #2191 (-47)
20M → 21M
7:17 | 7:17/mi
35K· 21.75 mi
2:22:14
Rank: #2203 (-12)
21M → 35K
4:56 | 6:36/mi
23M
2:30:59
Rank: #2249 (-46)
35K → 23M
8:45 | 6:59/mi
24M
2:37:37
Rank: #2247 (+2)
23M → 24M
6:38 | 6:38/mi
40K· 24.85 mi
2:43:24
Rank: #2233 (+14)
24M → 40K
5:47 | 6:46/mi
25.2M
2:45:52
Rank: #2224 (+9)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:52:35
Rank: #2212 (+12)
25.2M → Finish
6:43 | 6:35/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
Time1:24:06
Pace6:25 /mi
2nd Half
Distance13.11 mi
Time1:28:29
Pace6:45 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:0319:596:2619:59
6:26
-
10K
6.21 mi11:04:5139:476:2419:48
6:22
-0:04
15K
9.32 mi11:24:4559:416:2419:54
6:24
+0:02
20K
12.43 mi11:44:451:19:416:2520:00
6:26
+0:02
Half
13.11 mi11:49:101:24:066:254:25
6:28
+0:02
25K
15.53 mi12:04:551:39:516:2615:45
6:30
+0:02
30K
18.64 mi12:25:492:00:456:2920:54
6:44
+0:14
20M
20.00 mi12:35:052:10:016:309:16
6:49
+0:05
21M
21.00 mi12:42:222:17:186:327:17
7:17
+0:28
35K
21.75 mi12:47:182:22:146:324:56
6:36
-0:41
23M
23.00 mi12:56:032:30:596:348:45
6:59
+0:23
24M
24.00 mi13:02:412:37:376:346:38
6:38
-0:21
40K
24.85 mi13:08:282:43:246:345:47
6:46
+0:08
25.2M
25.20 mi13:10:562:45:526:352:28
7:09
+0:23
Finish
26.22 mi13:17:392:52:356:356:43
6:35
-0:34

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

6:22 /mi

Average Pace

6:35 /mi

Slowest Pace

7:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:50

94% of race

Time at Steady Pace

9:45

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:35 /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 mi10:45:0319:596:2619:59
6:26
#1947
10K
6.21 mi11:04:5139:476:2419:48
6:22
#1993
15K
9.32 mi11:24:4559:416:2419:54
6:24
#2018
20K
12.43 mi11:44:451:19:416:2520:00
6:26
#1999
Half
13.11 mi11:49:101:24:066:254:25
6:28
#2016
25K
15.53 mi12:04:551:39:516:2615:45
6:30
#2041
30K
18.64 mi12:25:492:00:456:2920:54
6:44
#2102
20M
20.00 mi12:35:052:10:016:309:16
6:49
#2144
21M
21.00 mi12:42:222:17:186:327:17
7:17
#2191
35K
21.75 mi12:47:182:22:146:324:56
6:36
#2203
23M
23.00 mi12:56:032:30:596:348:45
6:59
#2249
24M
24.00 mi13:02:412:37:376:346:38
6:38
#2247
40K
24.85 mi13:08:282:43:246:345:47
6:46
#2233
25.2M
25.20 mi13:10:562:45:526:352:28
7:09
#2224
Finish
26.22 mi13:17:392:52:356:356:43
6:35
#2212
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1947185818582133(Top 8%)2046(Top 13%)2046(Top 39%)
10K6.21 mi3.10 mi1993-461910-521910-522102(Top 8%)2013(Top 13%)2013(Top 38%)
15K9.32 mi3.11 mi2018-251933-231933-232133(Top 8%)2046(Top 13%)2046(Top 39%)
20K12.43 mi3.11 mi1999+191914+191914+191984(Top 7%)1905(Top 13%)1905(Top 36%)
Half13.11 mi0.68 mi2016-171932-181932-182583(Top 10%)2477(Top 16%)2477(Top 47%)
25K15.53 mi2.42 mi2041-251956-241956-242149(Top 8%)2062(Top 14%)2062(Top 39%)
30K18.64 mi3.11 mi2102-612016-602016-602538(Top 10%)2413(Top 16%)2413(Top 46%)
20M20.00 mi1.36 mi2144-422055-392055-392909(Top 11%)2734(Top 18%)2734(Top 52%)
21M21.00 mi1.00 mi2191-472100-452100-453486(Top 13%)3237(Top 21%)3237(Top 61%)
35K21.75 mi0.75 mi2203-122111-112111-112917(Top 11%)2728(Top 18%)2728(Top 52%)
23M23.00 mi1.25 mi2249-462154-432154-433698(Top 14%)3412(Top 22%)3412(Top 65%)
24M24.00 mi1.00 mi2247+22153+12153+12722(Top 10%)2531(Top 17%)2531(Top 48%)
40K24.85 mi0.85 mi2233+142143+102143+102625(Top 10%)2424(Top 16%)2424(Top 46%)
25.2M25.20 mi0.35 mi2224+92134+92134+92280(Top 9%)2113(Top 14%)2113(Top 40%)
Finish26.22 mi1.02 mi2212+122118+162118+162920(Top 11%)2645(Top 17%)2645(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2133

Males

2046

M18-39

2046

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2102

Males

2013

M18-39

2013

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2133

Males

2046

M18-39

2046

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1984

Males

1905

M18-39

1905

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2583

Males

2477

M18-39

2477

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2149

Males

2062

M18-39

2062

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2538

Males

2413

M18-39

2413

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2909

Males

2734

M18-39

2734

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3486

Males

3237

M18-39

3237

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

2917

Males

2728

M18-39

2728

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3698

Males

3412

M18-39

3412

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2722

Males

2531

M18-39

2531

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2625

Males

2424

M18-39

2424

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2280

Males

2113

M18-39

2113

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2920

Males

2645

M18-39

2645

Passing Analysis

Category:
Athletes Passed
479
Passed By
744
Net Change
-265
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1947
5K → 10K78124-46#1947#1993
10K → 15K5277-25#1993#2018
15K → 20K6445+19#2018#1999
20K → Half623-17#1999#2016
Half → 25K3358-25#2016#2041
25K → 30K49110-61#2041#2102
30K → 20M2264-42#2102#2144
20M → 21M2269-47#2144#2191
21M → 35K1729-12#2191#2203
35K → 23M1965-46#2203#2249
23M → 24M3533+2#2249#2247
24M → 40K3319+14#2247#2233
40K → 25.2M145+9#2233#2224
25.2M → Finish3523+12#2224#2212
TOTALS479744-265
📊

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