Boston Marathon logo
BOSTON MARATHON 2023

David Tolley

Bib: 26715•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
9:15/mi
28:45
↑ 97↓ 3451.5%
10K· 6.21 mi
8:55/mi
56:26
↑ 79↓ 1380.4%
15K· 9.32 mi
8:48/mi
1:23:47
↑ 67↓ 78
20K· 12.43 mi
9:18/mi
1:52:40
↑ 106↓ 860.1%
Half· 13.11 mi
8:24/mi
1:58:24
↑ 19↓ 370.5%
25K· 15.53 mi
8:58/mi
2:20:08
↑ 66↓ 880.2%
30K· 18.64 mi
9:45/mi
2:50:26
↑ 181↓ 1480.2%
20M
9:53/mi
3:03:52
↑ 64↓ 500.2%
21M
9:53/mi
3:13:45
↑ 106↓ 241.6%
35K· 21.75 mi
9:03/mi
3:20:31
↑ 17↓ 861.7%
23M
9:48/mi
3:32:47
↑ 23↓ 630.6%
24M
9:51/mi
3:42:38
↓ 821.3%
40K· 24.85 mi
9:55/mi
3:51:07
↓ 200.3%
25.2M
10:41/mi
3:54:48
↑ 13↓ 160.2%
Finish· 26.22 mi
8:56/mi
4:03:54
↑ 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
Time1:58:24
Pace9:02 /mi
2nd Half
Distance13.11 mi
Time2:05:30
Pace9:34 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2528:459:1528:45
9:15
-
10K
6.21 mi12:13:0656:269:0527:41
8:55
-0:20
15K
9.32 mi12:40:271:23:478:5927:21
8:48
-0:07
20K
12.43 mi13:09:201:52:409:0428:53
9:18
+0:30
Half
13.11 mi13:15:041:58:249:025:44
8:24
-0:54
25K
15.53 mi13:36:482:20:089:0121:44
8:58
+0:34
30K
18.64 mi14:07:062:50:269:0930:18
9:45
+0:47
20M
20.00 mi14:20:323:03:529:1213:26
9:53
+0:08
21M
21.00 mi14:30:253:13:459:149:53
9:53
0:00
35K
21.75 mi14:37:113:20:319:136:46
9:03
-0:50
23M
23.00 mi14:49:273:32:479:1512:16
9:48
+0:45
24M
24.00 mi14:59:183:42:389:179:51
9:51
+0:03
40K
24.85 mi15:07:473:51:079:188:29
9:55
+0:04
25.2M
25.20 mi15:11:283:54:489:193:41
10:41
+0:46
Finish
26.22 mi15:20:344:03:549:199:06
8:56
-1:45

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

8:24 /mi

Average Pace

9:19 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:31:36

38% of race

Time at Steady Pace

1:04:24

26% of race

Time at Slower Pace

1:27:54

36% of race

Average Pace: 9:18 /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 mi11:45:2528:459:1528:45
9:15
#21385
10K
6.21 mi12:13:0656:269:0527:41
8:55
#20986
15K
9.32 mi12:40:271:23:478:5927:21
8:48
#20517
20K
12.43 mi13:09:201:52:409:0428:53
9:18
#20639
Half
13.11 mi13:15:041:58:249:025:44
8:24
#20497
25K
15.53 mi13:36:482:20:089:0121:44
8:58
#20213
30K
18.64 mi14:07:062:50:269:0930:18
9:45
#20245
20M
20.00 mi14:20:323:03:529:1213:26
9:53
#20228
21M
21.00 mi14:30:253:13:459:149:53
9:53
#20057
35K
21.75 mi14:37:113:20:319:136:46
9:03
#19978
23M
23.00 mi14:49:273:32:479:1512:16
9:48
#19936
24M
24.00 mi14:59:183:42:389:179:51
9:51
#19985
40K
24.85 mi15:07:473:51:079:188:29
9:55
#19976
25.2M
25.20 mi15:11:283:54:489:193:41
10:41
#19971
Finish
26.22 mi15:20:344:03:549:199:06
8:56
#19890
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi21385127931279319526(Top 73%)12104(Top 80%)12104(Top 540%)
10K6.21 mi3.10 mi20986+39912649+14412649+14420463(Top 77%)12488(Top 82%)12488(Top 557%)
15K9.32 mi3.11 mi20517+46912474+17512474+17519526(Top 73%)12104(Top 80%)12104(Top 540%)
20K12.43 mi3.11 mi20639-12212542-6812542-6820942(Top 79%)12718(Top 84%)12718(Top 568%)
Half13.11 mi0.68 mi20497+14212484+5812484+5817149(Top 64%)11158(Top 74%)11158(Top 498%)
25K15.53 mi2.42 mi20213+28412367+11712367+11718783(Top 71%)11757(Top 77%)11757(Top 525%)
30K18.64 mi3.11 mi20245-3212357+1012357+1020303(Top 76%)12340(Top 81%)12340(Top 551%)
20M20.00 mi1.36 mi20228+1712336+2112336+2120158(Top 76%)12176(Top 80%)12176(Top 543%)
21M21.00 mi1.00 mi20057+17112256+8012256+8017542(Top 66%)11016(Top 73%)11016(Top 492%)
35K21.75 mi0.75 mi19978+7912220+3612220+3618079(Top 68%)11181(Top 74%)11181(Top 499%)
23M23.00 mi1.25 mi19936+4212186+3412186+3419416(Top 73%)11756(Top 77%)11756(Top 525%)
24M24.00 mi1.00 mi19985-4912203-1712203-1720364(Top 76%)12153(Top 80%)12153(Top 542%)
40K24.85 mi0.85 mi19976+912183+2012183+2019746(Top 74%)11806(Top 78%)11806(Top 527%)
25.2M25.20 mi0.35 mi19971+512178+512178+519628(Top 74%)11752(Top 77%)11752(Top 524%)
Finish26.22 mi1.02 mi19890+8112140+3812140+3817617(Top 66%)10888(Top 72%)10888(Top 486%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

19526

Males

12104

M40-44

12104

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

20463

Males

12488

M40-44

12488

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

19526

Males

12104

M40-44

12104

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

20942

Males

12718

M40-44

12718

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

17149

Males

11158

M40-44

11158

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

18783

Males

11757

M40-44

11757

25K→30K

15.5 - 18.6 mi

Top 76%
×9story building
+181ft-148ft

Overall

20303

Males

12340

M40-44

12340

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

20158

Males

12176

M40-44

12176

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17542

Males

11016

M40-44

11016

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

18079

Males

11181

M40-44

11181

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19416

Males

11756

M40-44

11756

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

20364

Males

12153

M40-44

12153

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19746

Males

11806

M40-44

11806

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19628

Males

11752

M40-44

11752

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

17617

Males

10888

M40-44

10888

Passing Analysis

Category:
Athletes Passed
2373
Passed By
878
Net Change
+1495
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21385
5K → 10K524125+399#21385#20986
10K → 15K50334+469#20986#20517
15K → 20K122244-122#20517#20639
20K → Half1420+142#20639#20497
Half → 25K30319+284#20497#20213
25K → 30K134166-32#20213#20245
30K → 20M8871+17#20245#20228
20M → 21M18211+171#20228#20057
21M → 35K8910+79#20057#19978
35K → 23M8543+42#19978#19936
23M → 24M3584-49#19936#19985
24M → 40K5344+9#19985#19976
40K → 25.2M2520+5#19976#19971
25.2M → Finish887+81#19971#19890
TOTALS2373878+1495
📊

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