Boston Marathon logo
BOSTON MARATHON 2023

James Parks

Bib: 10773•M

OH

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 38%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 42%
Division (M55-59)
#0 / 1422
Top 24%
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
7:25/mi
23:01
↑ 97↓ 3451.5%
10K· 6.21 mi
7:22/mi
45:54
↑ 79↓ 1380.4%
15K· 9.32 mi
7:23/mi
1:08:50
↑ 67↓ 78
20K· 12.43 mi
7:29/mi
1:32:05
↑ 106↓ 860.1%
Half· 13.11 mi
7:23/mi
1:37:07
↑ 19↓ 370.5%
25K· 15.53 mi
7:33/mi
1:55:26
↑ 66↓ 880.2%
30K· 18.64 mi
7:50/mi
2:19:47
↑ 181↓ 1480.2%
20M
7:55/mi
2:30:32
↑ 64↓ 500.2%
21M
8:31/mi
2:39:03
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:44:57
↑ 17↓ 861.7%
23M
8:35/mi
2:55:42
↑ 23↓ 630.6%
24M
8:25/mi
3:04:07
↓ 821.3%
40K· 24.85 mi
8:57/mi
3:11:46
↓ 200.3%
25.2M
8:59/mi
3:14:52
↑ 13↓ 160.2%
Finish· 26.22 mi
8:28/mi
3:23:30
↑ 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
Time1:37:07
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:46:23
Pace8:07 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:5623:017:2523:01
7:25
-
10K
6.21 mi11:12:4945:547:2322:53
7:22
-0:03
15K
9.32 mi11:35:451:08:507:2322:56
7:23
+0:01
20K
12.43 mi11:59:001:32:057:2523:15
7:29
+0:06
Half
13.11 mi12:04:021:37:077:245:02
7:23
-0:06
25K
15.53 mi12:22:211:55:267:2618:19
7:33
+0:10
30K
18.64 mi12:46:422:19:477:3024:21
7:50
+0:17
20M
20.00 mi12:57:272:30:327:3210:45
7:55
+0:05
21M
21.00 mi13:05:582:39:037:348:31
8:31
+0:36
35K
21.75 mi13:11:522:44:577:355:54
7:53
-0:38
23M
23.00 mi13:22:372:55:427:3810:45
8:35
+0:42
24M
24.00 mi13:31:023:04:077:408:25
8:25
-0:10
40K
24.85 mi13:38:413:11:467:437:39
8:57
+0:32
25.2M
25.20 mi13:41:473:14:527:443:06
8:59
+0:02
Finish
26.22 mi13:50:253:23:307:468:38
8:28
-0:31

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

7:22 /mi

Average Pace

7:46 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:26

57% of race

Time at Steady Pace

41:00

20% of race

Time at Slower Pace

47:04

23% of race

Average Pace: 7:46 /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 mi10:49:5623:017:2523:01
7:25
#8880
10K
6.21 mi11:12:4945:547:2322:53
7:22
#9085
15K
9.32 mi11:35:451:08:507:2322:56
7:23
#9077
20K
12.43 mi11:59:001:32:057:2523:15
7:29
#9079
Half
13.11 mi12:04:021:37:077:245:02
7:23
#9081
25K
15.53 mi12:22:211:55:267:2618:19
7:33
#9065
30K
18.64 mi12:46:422:19:477:3024:21
7:50
#9150
20M
20.00 mi12:57:272:30:327:3210:45
7:55
#9164
21M
21.00 mi13:05:582:39:037:348:31
8:31
#9213
35K
21.75 mi13:11:522:44:577:355:54
7:53
#9278
23M
23.00 mi13:22:372:55:427:3810:45
8:35
#9525
24M
24.00 mi13:31:023:04:077:408:25
8:25
#9699
40K
24.85 mi13:38:413:11:467:437:39
8:57
#9962
25.2M
25.20 mi13:41:473:14:527:443:06
8:59
#9988
Finish
26.22 mi13:50:253:23:307:468:38
8:28
#10196
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi8880752275229184(Top 34%)7658(Top 50%)7658(Top 539%)
10K6.21 mi3.10 mi9085-2057625-1037625-1039352(Top 35%)7776(Top 51%)7776(Top 547%)
15K9.32 mi3.11 mi9077+87607+187607+189184(Top 34%)7658(Top 50%)7658(Top 539%)
20K12.43 mi3.11 mi9079-27602+57602+59186(Top 35%)7615(Top 50%)7615(Top 536%)
Half13.11 mi0.68 mi9081-27596+67596+69229(Top 35%)7664(Top 51%)7664(Top 539%)
25K15.53 mi2.42 mi9065+167587+97587+99193(Top 35%)7555(Top 50%)7555(Top 531%)
30K18.64 mi3.11 mi9150-857594-77594-79642(Top 36%)7638(Top 50%)7638(Top 537%)
20M20.00 mi1.36 mi9164-147581+137581+139622(Top 36%)7538(Top 50%)7538(Top 530%)
21M21.00 mi1.00 mi9213-497581758110554(Top 40%)7887(Top 52%)7887(Top 555%)
35K21.75 mi0.75 mi9278-657605-247605-2411248(Top 42%)8230(Top 54%)8230(Top 579%)
23M23.00 mi1.25 mi9525-2477737-1327737-13213702(Top 51%)9230(Top 61%)9230(Top 649%)
24M24.00 mi1.00 mi9699-1747797-607797-6013941(Top 52%)9277(Top 61%)9277(Top 652%)
40K24.85 mi0.85 mi9962-2637906-1097906-10915824(Top 59%)10045(Top 66%)10045(Top 706%)
25.2M25.20 mi0.35 mi9988-267903+37903+312365(Top 46%)8428(Top 56%)8428(Top 593%)
Finish26.22 mi1.02 mi10196-2087989-867989-8615197(Top 57%)9803(Top 65%)9803(Top 689%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9184

Males

7658

M55-59

7658

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9352

Males

7776

M55-59

7776

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9184

Males

7658

M55-59

7658

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9186

Males

7615

M55-59

7615

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9229

Males

7664

M55-59

7664

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9193

Males

7555

M55-59

7555

25K→30K

15.5 - 18.6 mi

Top 36%
×9story building
+181ft-148ft

Overall

9642

Males

7638

M55-59

7638

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

9622

Males

7538

M55-59

7538

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10554

Males

7887

M55-59

7887

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11248

Males

8230

M55-59

8230

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13702

Males

9230

M55-59

9230

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

13941

Males

9277

M55-59

9277

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15824

Males

10045

M55-59

10045

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12365

Males

8428

M55-59

8428

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15197

Males

9803

M55-59

9803

Passing Analysis

Category:
Athletes Passed
1046
Passed By
2361
Net Change
-1316
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8880
5K → 10K191396-205#8880#9085
10K → 15K148140+8#9085#9077
15K → 20K132134-2#9077#9079
20K → Half2224-2#9079#9081
Half → 25K123107+16#9081#9065
25K → 30K138223-85#9065#9150
30K → 20M7589-14#9150#9164
20M → 21M64113-49#9164#9213
21M → 35K2994-65#9213#9278
35K → 23M39286-247#9278#9525
23M → 24M23197-174#9525#9699
24M → 40K21284-263#9699#9962
40K → 25.2M2248-26#9962#9988
25.2M → Finish19226-208#9988#10196
TOTALS10462361-1316
📊

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