Boston Marathon logo
BOSTON MARATHON 2023

Colin Reed

Bib: 5063•M

WA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 18%
Gender (Male)
#0 / 15176
Top 29%
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
6:46/mi
21:01
↑ 97↓ 3451.5%
10K· 6.21 mi
6:37/mi
41:33
↑ 79↓ 1380.4%
15K· 9.32 mi
6:36/mi
1:02:03
↑ 67↓ 78
20K· 12.43 mi
6:38/mi
1:22:38
↑ 106↓ 860.1%
Half· 13.11 mi
6:28/mi
1:27:03
↑ 19↓ 370.5%
25K· 15.53 mi
6:40/mi
1:43:12
↑ 66↓ 880.2%
30K· 18.64 mi
7:00/mi
2:04:58
↑ 181↓ 1480.2%
20M
7:20/mi
2:14:56
↑ 64↓ 500.2%
21M
8:05/mi
2:23:01
↑ 106↓ 241.6%
35K· 21.75 mi
7:13/mi
2:28:25
↑ 17↓ 861.7%
23M
7:24/mi
2:37:41
↑ 23↓ 630.6%
24M
7:51/mi
2:45:32
↓ 821.3%
40K· 24.85 mi
7:22/mi
2:51:50
↓ 200.3%
25.2M
8:16/mi
2:54:41
↑ 13↓ 160.2%
Finish· 26.22 mi
8:04/mi
3:02:54
↑ 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
Time1:27:03
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:35:51
Pace7:19 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5421:016:4621:01
6:46
-
10K
6.21 mi10:44:2641:336:4120:32
6:37
-0:09
15K
9.32 mi11:04:561:02:036:3920:30
6:36
-0:01
20K
12.43 mi11:25:311:22:386:3920:35
6:38
+0:02
Half
13.11 mi11:29:561:27:036:384:25
6:28
-0:10
25K
15.53 mi11:46:051:43:126:3916:09
6:40
+0:12
30K
18.64 mi12:07:512:04:586:4221:46
7:00
+0:20
20M
20.00 mi12:17:492:14:566:459:58
7:20
+0:20
21M
21.00 mi12:25:542:23:016:498:05
8:05
+0:45
35K
21.75 mi12:31:182:28:256:495:24
7:13
-0:52
23M
23.00 mi12:40:342:37:416:519:16
7:24
+0:11
24M
24.00 mi12:48:252:45:326:547:51
7:51
+0:27
40K
24.85 mi12:54:432:51:506:556:18
7:22
-0:29
25.2M
25.20 mi12:57:342:54:416:562:51
8:16
+0:54
Finish
26.22 mi13:05:473:02:546:598:13
8:04
-0:12

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

6:28 /mi

Average Pace

6:59 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:12

56% of race

Time at Steady Pace

52:42

29% of race

Time at Slower Pace

27:00

15% of race

Average Pace: 6:59 /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 mi10:23:5421:016:4621:01
6:46
#4310
10K
6.21 mi10:44:2641:336:4120:32
6:37
#3849
15K
9.32 mi11:04:561:02:036:3920:30
6:36
#3614
20K
12.43 mi11:25:311:22:386:3920:35
6:38
#3443
Half
13.11 mi11:29:561:27:036:384:25
6:28
#3396
25K
15.53 mi11:46:051:43:126:3916:09
6:40
#3304
30K
18.64 mi12:07:512:04:586:4221:46
7:00
#3469
20M
20.00 mi12:17:492:14:566:459:58
7:20
#3664
21M
21.00 mi12:25:542:23:016:498:05
8:05
#3965
35K
21.75 mi12:31:182:28:256:495:24
7:13
#4092
23M
23.00 mi12:40:342:37:416:519:16
7:24
#4227
24M
24.00 mi12:48:252:45:326:547:51
7:51
#4537
40K
24.85 mi12:54:432:51:506:556:18
7:22
#4558
25.2M
25.20 mi12:57:342:54:416:562:51
8:16
#4606
Finish
26.22 mi13:05:473:02:546:598:13
8:04
#4812
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4310402840283289(Top 12%)3124(Top 21%)3124(Top 59%)
10K6.21 mi3.10 mi3849+4613624+4043624+4043568(Top 13%)3374(Top 22%)3374(Top 64%)
15K9.32 mi3.11 mi3614+2353416+2083416+2083289(Top 12%)3124(Top 21%)3124(Top 59%)
20K12.43 mi3.11 mi3443+1713264+1523264+1523020(Top 11%)2876(Top 19%)2876(Top 54%)
Half13.11 mi0.68 mi3396+473224+403224+402692(Top 10%)2586(Top 17%)2586(Top 49%)
25K15.53 mi2.42 mi3304+923145+793145+793083(Top 12%)2940(Top 19%)2940(Top 56%)
30K18.64 mi3.11 mi3469-1653285-1403285-1404385(Top 16%)4073(Top 27%)4073(Top 77%)
20M20.00 mi1.36 mi3664-1953461-1763461-1765802(Top 22%)5140(Top 34%)5140(Top 97%)
21M21.00 mi1.00 mi3965-3013729-2683729-2687853(Top 29%)6383(Top 42%)6383(Top 121%)
35K21.75 mi0.75 mi4092-1273836-1073836-1076574(Top 25%)5611(Top 37%)5611(Top 106%)
23M23.00 mi1.25 mi4227-1353956-1203956-1205846(Top 22%)5071(Top 33%)5071(Top 96%)
24M24.00 mi1.00 mi4537-3104230-2744230-27410090(Top 38%)7424(Top 49%)7424(Top 140%)
40K24.85 mi0.85 mi4558-214243-134243-135842(Top 22%)4908(Top 32%)4908(Top 93%)
25.2M25.20 mi0.35 mi4606-484282-394282-397939(Top 30%)6099(Top 40%)6099(Top 115%)
Finish26.22 mi1.02 mi4812-2064440-1584440-15812505(Top 47%)8512(Top 56%)8512(Top 161%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21story building
+97ft-345ft

Overall

3289

Males

3124

M18-39

3124

5K→10K

3.1 - 6.2 mi

Top 13%
×5story building
+79ft-138ft

Overall

3568

Males

3374

M18-39

3374

10K→15K

6.2 - 9.3 mi

Top 12%
×3story building
+67ft-78ft

Overall

3289

Males

3124

M18-39

3124

15K→20K

9.3 - 12.4 mi

Top 11%
×5story building
+106ft-86ft

Overall

3020

Males

2876

M18-39

2876

20K→Half

12.4 - 13.1 mi

Top 10%
×2story building
+19ft-37ft

Overall

2692

Males

2586

M18-39

2586

Half→25K

13.1 - 15.5 mi

Top 12%
×4story building
+66ft-88ft

Overall

3083

Males

2940

M18-39

2940

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4385

Males

4073

M18-39

4073

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

5802

Males

5140

M18-39

5140

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

7853

Males

6383

M18-39

6383

21M→35K

21.0 - 21.8 mi

Top 25%
×7story building
+17ft-86ft

Overall

6574

Males

5611

M18-39

5611

35K→23M

21.8 - 23.0 mi

Top 22%
×5story building
+23ft-63ft

Overall

5846

Males

5071

M18-39

5071

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10090

Males

7424

M18-39

7424

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5842

Males

4908

M18-39

4908

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7939

Males

6099

M18-39

6099

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

12505

Males

8512

M18-39

8512

Passing Analysis

Category:
Athletes Passed
1338
Passed By
1840
Net Change
-502
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4310
5K → 10K52968+461#4310#3849
10K → 15K26328+235#3849#3614
15K → 20K18413+171#3614#3443
20K → Half481+47#3443#3396
Half → 25K12331+92#3396#3304
25K → 30K48213-165#3304#3469
30K → 20M23218-195#3469#3664
20M → 21M15316-301#3664#3965
21M → 35K10137-127#3965#4092
35K → 23M34169-135#4092#4227
23M → 24M7317-310#4227#4537
24M → 40K3859-21#4537#4558
40K → 25.2M755-48#4558#4606
25.2M → Finish9215-206#4606#4812
TOTALS13381840-502
📊

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