Boston Marathon logo
BOSTON MARATHON 2023

Colin Flynn

Bib: 26371•M

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
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
8:26/mi
26:13
↑ 97↓ 3451.5%
10K· 6.21 mi
7:50/mi
50:33
↑ 79↓ 1380.4%
15K· 9.32 mi
8:16/mi
1:16:15
↑ 67↓ 78
20K· 12.43 mi
8:37/mi
1:43:02
↑ 106↓ 860.1%
Half· 13.11 mi
8:34/mi
1:48:53
↑ 19↓ 370.5%
25K· 15.53 mi
9:17/mi
2:11:24
↑ 66↓ 880.2%
30K· 18.64 mi
9:24/mi
2:40:37
↑ 181↓ 1480.2%
20M
9:35/mi
2:53:38
↑ 64↓ 500.2%
21M
9:57/mi
3:03:35
↑ 106↓ 241.6%
35K· 21.75 mi
9:48/mi
3:10:55
↑ 17↓ 861.7%
23M
9:49/mi
3:23:13
↑ 23↓ 630.6%
24M
9:44/mi
3:32:57
↓ 821.3%
40K· 24.85 mi
10:05/mi
3:41:34
↓ 200.3%
25.2M
10:44/mi
3:45:16
↑ 13↓ 160.2%
Finish· 26.22 mi
9:21/mi
3:54:48
↑ 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
Time1:48:53
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time2:05:55
Pace9:36 /mi
📊Positive Split: 15.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:5526:138:2626:13
8:26
-
10K
6.21 mi12:07:1550:338:0824:20
7:50
-0:36
15K
9.32 mi12:32:571:16:158:1125:42
8:16
+0:26
20K
12.43 mi12:59:441:43:028:1726:47
8:37
+0:21
Half
13.11 mi13:05:351:48:538:185:51
8:34
-0:03
25K
15.53 mi13:28:062:11:248:2822:31
9:17
+0:43
30K
18.64 mi13:57:192:40:378:3729:13
9:24
+0:07
20M
20.00 mi14:10:202:53:388:4113:01
9:35
+0:11
21M
21.00 mi14:20:173:03:358:459:57
9:57
+0:22
35K
21.75 mi14:27:373:10:558:477:20
9:48
-0:09
23M
23.00 mi14:39:553:23:138:5012:18
9:49
+0:01
24M
24.00 mi14:49:393:32:578:529:44
9:44
-0:05
40K
24.85 mi14:58:163:41:348:558:37
10:05
+0:21
25.2M
25.20 mi15:01:583:45:168:563:42
10:44
+0:39
Finish
26.22 mi15:11:303:54:488:589:32
9:21
-1:23

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

7:50 /mi

Average Pace

8:58 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:53

46% of race

Time at Steady Pace

1:24:01

36% of race

Time at Slower Pace

41:54

18% of race

Average Pace: 8:57 /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 mi11:42:5526:138:2626:13
8:26
#17133
10K
6.21 mi12:07:1550:338:0824:20
7:50
#15341
15K
9.32 mi12:32:571:16:158:1125:42
8:16
#15674
20K
12.43 mi12:59:441:43:028:1726:47
8:37
#16200
Half
13.11 mi13:05:351:48:538:185:51
8:34
#16328
25K
15.53 mi13:28:062:11:248:2822:31
9:17
#17081
30K
18.64 mi13:57:192:40:378:3729:13
9:24
#17468
20M
20.00 mi14:10:202:53:388:4113:01
9:35
#17613
21M
21.00 mi14:20:173:03:358:459:57
9:57
#17644
35K
21.75 mi14:27:373:10:558:477:20
9:48
#17806
23M
23.00 mi14:39:553:23:138:5012:18
9:49
#17983
24M
24.00 mi14:49:393:32:578:529:44
9:44
#18112
40K
24.85 mi14:58:163:41:348:558:37
10:05
#18224
25.2M
25.20 mi15:01:583:45:168:563:42
10:44
#18267
Finish
26.22 mi15:11:303:54:488:589:32
9:21
#18337
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi17133110961109616355(Top 61%)10830(Top 71%)10830(Top 483%)
10K6.21 mi3.10 mi15341+179210459+63710459+63713401(Top 50%)9732(Top 64%)9732(Top 434%)
15K9.32 mi3.11 mi15674-33310574-11510574-11516355(Top 61%)10830(Top 71%)10830(Top 483%)
20K12.43 mi3.11 mi16200-52610759-18510759-18517624(Top 66%)11303(Top 74%)11303(Top 504%)
Half13.11 mi0.68 mi16328-12810800-4110800-4118141(Top 68%)11547(Top 76%)11547(Top 515%)
25K15.53 mi2.42 mi17081-75311068-26811068-26820149(Top 76%)12344(Top 81%)12344(Top 551%)
30K18.64 mi3.11 mi17468-38711213-14511213-14519041(Top 72%)11800(Top 78%)11800(Top 527%)
20M20.00 mi1.36 mi17613-14511252-3911252-3919137(Top 72%)11744(Top 77%)11744(Top 524%)
21M21.00 mi1.00 mi17644-3111248+411248+417842(Top 67%)11160(Top 74%)11160(Top 498%)
35K21.75 mi0.75 mi17806-16211301-5311301-5320741(Top 78%)12356(Top 81%)12356(Top 551%)
23M23.00 mi1.25 mi17983-17711361-6011361-6019485(Top 73%)11790(Top 78%)11790(Top 526%)
24M24.00 mi1.00 mi18112-12911396-3511396-3519988(Top 75%)11993(Top 79%)11993(Top 535%)
40K24.85 mi0.85 mi18224-11211435-3911435-3920169(Top 76%)11998(Top 79%)11998(Top 535%)
25.2M25.20 mi0.35 mi18267-4311448-1311448-1319742(Top 74%)11794(Top 78%)11794(Top 526%)
Finish26.22 mi1.02 mi18337-7011473-2511473-2519581(Top 74%)11787(Top 78%)11787(Top 526%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

16355

Males

10830

M40-44

10830

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

13401

Males

9732

M40-44

9732

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

16355

Males

10830

M40-44

10830

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17624

Males

11303

M40-44

11303

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

18141

Males

11547

M40-44

11547

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20149

Males

12344

M40-44

12344

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

19041

Males

11800

M40-44

11800

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

19137

Males

11744

M40-44

11744

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

17842

Males

11160

M40-44

11160

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20741

Males

12356

M40-44

12356

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19485

Males

11790

M40-44

11790

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

19988

Males

11993

M40-44

11993

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20169

Males

11998

M40-44

11998

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19742

Males

11794

M40-44

11794

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

19581

Males

11787

M40-44

11787

Passing Analysis

Category:
Athletes Passed
2321
Passed By
3525
Net Change
-1204
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17133
5K → 10K181725+1792#17133#15341
10K → 15K78411-333#15341#15674
15K → 20K52578-526#15674#16200
20K → Half16144-128#16200#16328
Half → 25K18771-753#16328#17081
25K → 30K78465-387#17081#17468
30K → 20M49194-145#17468#17613
20M → 21M70101-31#17613#17644
21M → 35K22184-162#17644#17806
35K → 23M43220-177#17806#17983
23M → 24M23152-129#17983#18112
24M → 40K20132-112#18112#18224
40K → 25.2M1356-43#18224#18267
25.2M → Finish2292-70#18267#18337
TOTALS23213525-1204
📊

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