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BOSTON MARATHON 2025

Mike Bass

Bib: 17916•M

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/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
8:18/mi
25:48
↑ 97↓ 3451.5%
10K· 6.21 mi
8:21/mi
51:44
↑ 79↓ 1380.4%
15K· 9.32 mi
8:21/mi
1:17:42
↑ 67↓ 78
20K· 12.43 mi
8:29/mi
1:44:04
↑ 106↓ 860.1%
Half· 13.11 mi
8:29/mi
1:49:51
↑ 19↓ 370.5%
25K· 15.53 mi
8:38/mi
2:10:47
↑ 66↓ 880.2%
30K· 18.64 mi
8:58/mi
2:38:40
↑ 181↓ 1480.2%
20M
9:16/mi
2:51:15
↑ 64↓ 500.2%
21M
10:04/mi
3:01:19
↑ 106↓ 241.6%
35K· 21.75 mi
9:31/mi
3:08:26
↑ 17↓ 861.7%
23M
9:33/mi
3:20:23
↑ 23↓ 630.6%
24M
9:38/mi
3:30:01
↓ 821.3%
40K· 24.85 mi
9:44/mi
3:38:20
↓ 200.3%
25.2M
10:58/mi
3:42:07
↑ 13↓ 160.2%
Finish· 26.22 mi
9:45/mi
3:52:03
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:51
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time2:02:12
Pace9:19 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5425:488:1825:48
8:18
-
10K
6.21 mi11:41:5051:448:2025:56
8:21
+0:03
15K
9.32 mi12:07:481:17:428:2025:58
8:21
0:00
20K
12.43 mi12:34:101:44:048:2226:22
8:29
+0:08
Half
13.11 mi12:39:571:49:518:235:47
8:29
0:00
25K
15.53 mi13:00:532:10:478:2520:56
8:38
+0:09
30K
18.64 mi13:28:462:38:408:3127:53
8:58
+0:20
20M
20.00 mi13:41:212:51:158:3412:35
9:16
+0:18
21M
21.00 mi13:51:253:01:198:3810:04
10:04
+0:48
35K
21.75 mi13:58:323:08:268:407:07
9:31
-0:33
23M
23.00 mi14:10:293:20:238:4311:57
9:33
+0:02
24M
24.00 mi14:20:073:30:018:459:38
9:38
+0:05
40K
24.85 mi14:28:263:38:208:478:19
9:44
+0:06
25.2M
25.20 mi14:32:133:42:078:493:47
10:58
+1:14
Finish
26.22 mi14:42:093:52:038:519:56
9:45
-1:13

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

8:18 /mi

Average Pace

8:51 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:47

56% of race

Time at Steady Pace

1:09:10

30% of race

Time at Slower Pace

32:06

14% of race

Average Pace: 8:51 /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 mi11:15:5425:488:1825:48
8:18
#18734
10K
6.21 mi11:41:5051:448:2025:56
8:21
#18769
15K
9.32 mi12:07:481:17:428:2025:58
8:21
#18621
20K
12.43 mi12:34:101:44:048:2226:22
8:29
#18470
Half
13.11 mi12:39:571:49:518:235:47
8:29
#18513
25K
15.53 mi13:00:532:10:478:2520:56
8:38
#18397
30K
18.64 mi13:28:462:38:408:3127:53
8:58
#18209
20M
20.00 mi13:41:212:51:158:3412:35
9:16
#18170
21M
21.00 mi13:51:253:01:198:3810:04
10:04
#18219
35K
21.75 mi13:58:323:08:268:407:07
9:31
#18315
23M
23.00 mi14:10:293:20:238:4311:57
9:33
#18350
24M
24.00 mi14:20:073:30:018:459:38
9:38
#18469
40K
24.85 mi14:28:263:38:208:478:19
9:44
#18505
25.2M
25.20 mi14:32:133:42:078:493:47
10:58
#18567
Finish
26.22 mi14:42:093:52:038:519:56
9:45
#18749
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi18734119211192118423(Top 65%)11804(Top 73%)11804(Top 716%)
10K6.21 mi3.10 mi18769-3511936-1511936-1518847(Top 66%)12000(Top 75%)12000(Top 728%)
15K9.32 mi3.11 mi18621+14811876+6011876+6018423(Top 65%)11804(Top 73%)11804(Top 716%)
20K12.43 mi3.11 mi18470+15111814+6211814+6218141(Top 64%)11673(Top 72%)11673(Top 708%)
Half13.11 mi0.68 mi18513-4311838-2411838-2418999(Top 67%)12039(Top 75%)12039(Top 731%)
25K15.53 mi2.42 mi18397+11611768+7011768+7018000(Top 63%)11524(Top 72%)11524(Top 699%)
30K18.64 mi3.11 mi18209+18811649+11911649+11917548(Top 62%)11170(Top 69%)11170(Top 678%)
20M20.00 mi1.36 mi18170+3911602+4711602+4718080(Top 64%)11273(Top 70%)11273(Top 684%)
21M21.00 mi1.00 mi18219-4911601+111601+118550(Top 65%)11413(Top 71%)11413(Top 693%)
35K21.75 mi0.75 mi18315-9611629-2811629-2820365(Top 72%)12142(Top 75%)12142(Top 737%)
23M23.00 mi1.25 mi18350-3511623+611623+618877(Top 66%)11384(Top 71%)11384(Top 691%)
24M24.00 mi1.00 mi18469-11911642-1911642-1920110(Top 71%)11917(Top 74%)11917(Top 723%)
40K24.85 mi0.85 mi18505-3611628+1411628+1419563(Top 69%)11589(Top 72%)11589(Top 703%)
25.2M25.20 mi0.35 mi18567-6211641-1311641-1320500(Top 72%)12033(Top 75%)12033(Top 730%)
Finish26.22 mi1.02 mi18749-18211708-6711708-6722063(Top 78%)12816(Top 80%)12816(Top 778%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18423

Males

11804

M55-59

11804

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

18847

Males

12000

M55-59

12000

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18423

Males

11804

M55-59

11804

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

18141

Males

11673

M55-59

11673

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

18999

Males

12039

M55-59

12039

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

18000

Males

11524

M55-59

11524

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

17548

Males

11170

M55-59

11170

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

18080

Males

11273

M55-59

11273

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

18550

Males

11413

M55-59

11413

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

20365

Males

12142

M55-59

12142

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

18877

Males

11384

M55-59

11384

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20110

Males

11917

M55-59

11917

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19563

Males

11589

M55-59

11589

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20500

Males

12033

M55-59

12033

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

22063

Males

12816

M55-59

12816

Passing Analysis

Category:
Athletes Passed
1840
Passed By
1855
Net Change
-15
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18734
5K → 10K244279-35#18734#18769
10K → 15K271123+148#18769#18621
15K → 20K267116+151#18621#18470
20K → Half1861-43#18470#18513
Half → 25K221105+116#18513#18397
25K → 30K330142+188#18397#18209
30K → 20M13798+39#18209#18170
20M → 21M83132-49#18170#18219
21M → 35K38134-96#18219#18315
35K → 23M93128-35#18315#18350
23M → 24M47166-119#18350#18469
24M → 40K5793-36#18469#18505
40K → 25.2M2082-62#18505#18567
25.2M → Finish14196-182#18567#18749
TOTALS18401855-15
📊

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