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BOSTON MARATHON 2025

Halldor Thorkelsson

Bib: 13503•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 35%
Gender (Male)
#0 / 16105
Top 48%
Masters (Masters Men)
#0 / 10463
Top 37%
Division (M50-54)
#0 / 1996
Top 38%
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
7:14/mi
22:27
↑ 97↓ 3451.5%
10K· 6.21 mi
7:10/mi
44:43
↑ 79↓ 1380.4%
15K· 9.32 mi
7:17/mi
1:07:21
↑ 67↓ 78
20K· 12.43 mi
7:23/mi
1:30:17
↑ 106↓ 860.1%
Half· 13.11 mi
7:14/mi
1:35:13
↑ 19↓ 370.5%
25K· 15.53 mi
7:39/mi
1:53:45
↑ 66↓ 880.2%
30K· 18.64 mi
7:48/mi
2:18:00
↑ 181↓ 1480.2%
20M
7:59/mi
2:28:51
↑ 64↓ 500.2%
21M
8:34/mi
2:37:25
↑ 106↓ 241.6%
35K· 21.75 mi
7:45/mi
2:43:13
↑ 17↓ 861.7%
23M
8:01/mi
2:53:15
↑ 23↓ 630.6%
24M
7:51/mi
3:01:06
↓ 821.3%
40K· 24.85 mi
8:11/mi
3:08:06
↓ 200.3%
25.2M
9:05/mi
3:11:14
↑ 13↓ 160.2%
Finish· 26.22 mi
7:54/mi
3:19:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:13
Pace7:16 /mi
2nd Half
Distance13.11 mi
Time1:44:04
Pace7:56 /mi
📊Positive Split: 9.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2622:277:1422:27
7:14
-
10K
6.21 mi11:13:4244:437:1222:16
7:10
-0:04
15K
9.32 mi11:36:201:07:217:1422:38
7:17
+0:07
20K
12.43 mi11:59:161:30:177:1622:56
7:23
+0:06
Half
13.11 mi12:04:121:35:137:164:56
7:14
-0:09
25K
15.53 mi12:22:441:53:457:1918:32
7:39
+0:25
30K
18.64 mi12:46:592:18:007:2424:15
7:48
+0:09
20M
20.00 mi12:57:502:28:517:2710:51
7:59
+0:11
21M
21.00 mi13:06:242:37:257:308:34
8:34
+0:35
35K
21.75 mi13:12:122:43:137:305:48
7:45
-0:49
23M
23.00 mi13:22:142:53:157:3210:02
8:01
+0:16
24M
24.00 mi13:30:053:01:067:337:51
7:51
-0:10
40K
24.85 mi13:37:053:08:067:347:00
8:11
+0:20
25.2M
25.20 mi13:40:133:11:147:353:08
9:05
+0:54
Finish
26.22 mi13:48:163:19:177:368:03
7:54
-1:11

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

7:10 /mi

Average Pace

7:36 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:35:13

48% of race

Time at Steady Pace

1:25:22

43% of race

Time at Slower Pace

18:42

9% of race

Average Pace: 7:36 /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 mi10:51:2622:277:1422:27
7:14
#9677
10K
6.21 mi11:13:4244:437:1222:16
7:10
#9426
15K
9.32 mi11:36:201:07:217:1422:38
7:17
#9544
20K
12.43 mi11:59:161:30:177:1622:56
7:23
#9540
Half
13.11 mi12:04:121:35:137:164:56
7:14
#9529
25K
15.53 mi12:22:441:53:457:1918:32
7:39
#9753
30K
18.64 mi12:46:592:18:007:2424:15
7:48
#9727
20M
20.00 mi12:57:502:28:517:2710:51
7:59
#9728
21M
21.00 mi13:06:242:37:257:308:34
8:34
#9766
35K
21.75 mi13:12:122:43:137:305:48
7:45
#9777
23M
23.00 mi13:22:142:53:157:3210:02
8:01
#9776
24M
24.00 mi13:30:053:01:067:337:51
7:51
#9774
40K
24.85 mi13:37:053:08:067:347:00
8:11
#9804
25.2M
25.20 mi13:40:133:11:147:353:08
9:05
#9839
Finish
26.22 mi13:48:163:19:177:368:03
7:54
#9921
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9677799479949871(Top 35%)8013(Top 50%)8013(Top 401%)
10K6.21 mi3.10 mi9426+2517862+1327862+1329207(Top 32%)7723(Top 48%)7723(Top 387%)
15K9.32 mi3.11 mi9544-1187898-367898-369871(Top 35%)8013(Top 50%)8013(Top 401%)
20K12.43 mi3.11 mi9540+47855+437855+439725(Top 34%)7864(Top 49%)7864(Top 394%)
Half13.11 mi0.68 mi9529+117841+147841+149334(Top 33%)7677(Top 48%)7677(Top 385%)
25K15.53 mi2.42 mi9753-2247934-937934-9311063(Top 39%)8409(Top 52%)8409(Top 421%)
30K18.64 mi3.11 mi9727+267862+727862+729976(Top 35%)7677(Top 48%)7677(Top 385%)
20M20.00 mi1.36 mi9728-17835+277835+2710326(Top 36%)7699(Top 48%)7699(Top 386%)
21M21.00 mi1.00 mi9766-387829+67829+610867(Top 38%)7806(Top 48%)7806(Top 391%)
35K21.75 mi0.75 mi9777-117807+227807+2210426(Top 37%)7580(Top 47%)7580(Top 380%)
23M23.00 mi1.25 mi9776+17756+517756+5110096(Top 36%)7281(Top 45%)7281(Top 365%)
24M24.00 mi1.00 mi9774+27717+397717+3910162(Top 36%)7243(Top 45%)7243(Top 363%)
40K24.85 mi0.85 mi9804-307698+197698+1911442(Top 40%)7777(Top 48%)7777(Top 390%)
25.2M25.20 mi0.35 mi9839-357693+57693+512197(Top 43%)8081(Top 50%)8081(Top 405%)
Finish26.22 mi1.02 mi9921-827715-227715-2212130(Top 43%)8096(Top 50%)8096(Top 406%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

9871

Males

8013

M50-54

8013

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

9207

Males

7723

M50-54

7723

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

9871

Males

8013

M50-54

8013

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9725

Males

7864

M50-54

7864

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

9334

Males

7677

M50-54

7677

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

11063

Males

8409

M50-54

8409

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9976

Males

7677

M50-54

7677

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

10326

Males

7699

M50-54

7699

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10867

Males

7806

M50-54

7806

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

10426

Males

7580

M50-54

7580

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

10096

Males

7281

M50-54

7281

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10162

Males

7243

M50-54

7243

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11442

Males

7777

M50-54

7777

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

12197

Males

8081

M50-54

8081

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

12130

Males

8096

M50-54

8096

Passing Analysis

Category:
Athletes Passed
1639
Passed By
1882
Net Change
-244
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9677
5K → 10K373122+251#9677#9426
10K → 15K126244-118#9426#9544
15K → 20K186182+4#9544#9540
20K → Half3423+11#9540#9529
Half → 25K95319-224#9529#9753
25K → 30K238212+26#9753#9727
30K → 20M115115-1#9727#9728
20M → 21M77115-38#9728#9766
21M → 35K6475-11#9766#9777
35K → 23M108107+1#9777#9776
23M → 24M9088+2#9776#9774
24M → 40K5585-30#9774#9804
40K → 25.2M2863-35#9804#9839
25.2M → Finish50132-82#9839#9921
TOTALS16391882-244
📊

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