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BOSTON MARATHON 2025

Harold Parks

Bib: 12109•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 25%
Gender (Male)
#0 / 16105
Top 38%
Masters (Masters Men)
#0 / 10463
Top 24%
Division (M50-54)
#0 / 1996
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
7:10/mi
22:16
↑ 97↓ 3451.5%
10K· 6.21 mi
7:06/mi
44:20
↑ 79↓ 1380.4%
15K· 9.32 mi
7:02/mi
1:06:11
↑ 67↓ 78
20K· 12.43 mi
7:05/mi
1:28:12
↑ 106↓ 860.1%
Half· 13.11 mi
6:59/mi
1:32:58
↑ 19↓ 370.5%
25K· 15.53 mi
7:05/mi
1:50:08
↑ 66↓ 880.2%
30K· 18.64 mi
7:27/mi
2:13:17
↑ 181↓ 1480.2%
20M
7:36/mi
2:23:36
↑ 64↓ 500.2%
21M
8:04/mi
2:31:40
↑ 106↓ 241.6%
35K· 21.75 mi
7:21/mi
2:37:10
↑ 17↓ 861.7%
23M
7:24/mi
2:46:26
↑ 23↓ 630.6%
24M
7:12/mi
2:53:38
↓ 821.3%
40K· 24.85 mi
7:20/mi
2:59:54
↓ 200.3%
25.2M
8:04/mi
3:02:41
↑ 13↓ 160.2%
Finish· 26.22 mi
7:22/mi
3:10:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:58
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time1:37:13
Pace7:25 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:5422:167:1022:16
7:10
-
10K
6.21 mi11:11:5844:207:0822:04
7:06
-0:04
15K
9.32 mi11:33:491:06:117:0621:51
7:02
-0:04
20K
12.43 mi11:55:501:28:127:0622:01
7:05
+0:03
Half
13.11 mi12:00:361:32:587:054:46
6:59
-0:06
25K
15.53 mi12:17:461:50:087:0517:10
7:05
+0:06
30K
18.64 mi12:40:552:13:177:0923:09
7:27
+0:22
20M
20.00 mi12:51:142:23:367:1110:19
7:36
+0:09
21M
21.00 mi12:59:182:31:407:138:04
8:04
+0:28
35K
21.75 mi13:04:482:37:107:145:30
7:21
-0:43
23M
23.00 mi13:14:042:46:267:149:16
7:24
+0:03
24M
24.00 mi13:21:162:53:387:147:12
7:12
-0:12
40K
24.85 mi13:27:322:59:547:146:16
7:20
+0:08
25.2M
25.20 mi13:30:193:02:417:152:47
8:04
+0:44
Finish
26.22 mi13:37:493:10:117:167:30
7:22
-0:42

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

6:59 /mi

Average Pace

7:16 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:59:20

94% of race

Time at Steady Pace

10:51

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:15 /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 mi10:49:5422:167:1022:16
7:10
#9175
10K
6.21 mi11:11:5844:207:0822:04
7:06
#8897
15K
9.32 mi11:33:491:06:117:0621:51
7:02
#8478
20K
12.43 mi11:55:501:28:127:0622:01
7:05
#8167
Half
13.11 mi12:00:361:32:587:054:46
6:59
#8110
25K
15.53 mi12:17:461:50:087:0517:10
7:05
#7855
30K
18.64 mi12:40:552:13:177:0923:09
7:27
#7671
20M
20.00 mi12:51:142:23:367:1110:19
7:36
#7608
21M
21.00 mi12:59:182:31:407:138:04
8:04
#7525
35K
21.75 mi13:04:482:37:107:145:30
7:21
#7502
23M
23.00 mi13:14:042:46:267:149:16
7:24
#7359
24M
24.00 mi13:21:162:53:387:147:12
7:12
#7231
40K
24.85 mi13:27:322:59:547:146:16
7:20
#7142
25.2M
25.20 mi13:30:193:02:417:152:47
8:04
#7100
Finish
26.22 mi13:37:493:10:117:167:30
7:22
#7113
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9175770677067832(Top 28%)6828(Top 42%)6828(Top 342%)
10K6.21 mi3.10 mi8897+2787530+1767530+1768680(Top 31%)7402(Top 46%)7402(Top 371%)
15K9.32 mi3.11 mi8478+4197271+2597271+2597832(Top 28%)6828(Top 42%)6828(Top 342%)
20K12.43 mi3.11 mi8167+3117059+2127059+2127432(Top 26%)6508(Top 40%)6508(Top 326%)
Half13.11 mi0.68 mi8110+577018+417018+417424(Top 26%)6514(Top 40%)6514(Top 326%)
25K15.53 mi2.42 mi7855+2556841+1776841+1776839(Top 24%)6004(Top 37%)6004(Top 301%)
30K18.64 mi3.11 mi7671+1846669+1726669+1727378(Top 26%)6202(Top 39%)6202(Top 311%)
20M20.00 mi1.36 mi7608+636594+756594+757587(Top 27%)6189(Top 38%)6189(Top 310%)
21M21.00 mi1.00 mi7525+836500+946500+947705(Top 27%)6088(Top 38%)6088(Top 305%)
35K21.75 mi0.75 mi7502+236460+406460+407507(Top 26%)5984(Top 37%)5984(Top 300%)
23M23.00 mi1.25 mi7359+1436331+1296331+1296042(Top 21%)4987(Top 31%)4987(Top 250%)
24M24.00 mi1.00 mi7231+1286215+1166215+1165807(Top 20%)4795(Top 30%)4795(Top 240%)
40K24.85 mi0.85 mi7142+896132+836132+835784(Top 20%)4717(Top 29%)4717(Top 236%)
25.2M25.20 mi0.35 mi7100+426089+436089+436250(Top 22%)4883(Top 30%)4883(Top 245%)
Finish26.22 mi1.02 mi7113-136073+166073+168153(Top 29%)5986(Top 37%)5986(Top 300%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7832

Males

6828

M50-54

6828

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8680

Males

7402

M50-54

7402

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7832

Males

6828

M50-54

6828

15K→20K

9.3 - 12.4 mi

Top 26%
×5story building
+106ft-86ft

Overall

7432

Males

6508

M50-54

6508

20K→Half

12.4 - 13.1 mi

Top 26%
×2story building
+19ft-37ft

Overall

7424

Males

6514

M50-54

6514

Half→25K

13.1 - 15.5 mi

Top 24%
×4story building
+66ft-88ft

Overall

6839

Males

6004

M50-54

6004

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

7378

Males

6202

M50-54

6202

30K→20M

18.6 - 20.0 mi

Top 27%
×5story building
+64ft-50ft

Overall

7587

Males

6189

M50-54

6189

20M→21M

20.0 - 21.0 mi

Top 27%
×8story building
+106ft-24ft

Overall

7705

Males

6088

M50-54

6088

21M→35K

21.0 - 21.8 mi

Top 26%
×7story building
+17ft-86ft

Overall

7507

Males

5984

M50-54

5984

35K→23M

21.8 - 23.0 mi

Top 21%
×5story building
+23ft-63ft

Overall

6042

Males

4987

M50-54

4987

23M→24M

23.0 - 24.0 mi

Top 20%
×6story building
+12ft-82ft

Overall

5807

Males

4795

M50-54

4795

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5784

Males

4717

M50-54

4717

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

6250

Males

4883

M50-54

4883

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

8153

Males

5986

M50-54

5986

Passing Analysis

Category:
Athletes Passed
2611
Passed By
549
Net Change
+2062
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9175
5K → 10K37496+278#9175#8897
10K → 15K44324+419#8897#8478
15K → 20K34231+311#8478#8167
20K → Half636+57#8167#8110
Half → 25K27318+255#8110#7855
25K → 30K28197+184#7855#7671
30K → 20M12158+63#7671#7608
20M → 21M12542+83#7608#7525
21M → 35K6744+23#7525#7502
35K → 23M16219+143#7502#7359
23M → 24M14719+128#7359#7231
24M → 40K10011+89#7231#7142
40K → 25.2M486+42#7142#7100
25.2M → Finish6578-13#7100#7113
TOTALS2611549+2062
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing